What Should I Do If Ac Compressor Clutch Is Not Engaging

the fans are blowing hard, but when I go under the hood the AC compressor clutch is not engaging (outside of pulley. My understanding is that it gets this signal from pin a15 from the ecu, correct? pin a15. The A/C clutch is electromagnetic. The clutch is the outward most plate on the compressor, pulley is in the middle, and the coil is nearest to the compressor. Problem started three days ago, AC was not working for first few miles then I This should be telling me that the AC system is probably charged and not the problem and the fans After the swap into the Cabrio and re-charging the system the compressor wouldn't power up. this means the compressor is not pumping. There was just another thread on A/C blowing warm posted. I would also rec. The ac compressor's clutch is not engaging. The compressor could be pulling hi amps due to wear and age, low power supply or perhaps a weak start run capacitor. Most manufacturers use a magnetic-type clutch which provides a means of stopping the pumping of the compressor when refrigeration is not desired. I then bought a used Honda compressor and the clutch was skipping while spinning. you only need to unbolt the compressor and prop it up. It didn't make a clicking noise when the AC was cycled on and off, either. Compressor clutch not : Protech441: Tiffin Owner's Forum: 7: 03-07-2017 09:18 PM: A/C compressor not engaging: CJ7365: Workhorse and Chevrolet Chassis Motorhome Forum: 1: 02-29-2016 08:58 PM: A/C Compressor not engaging: walkingplow: Newmar Owner's Forum: 4: 11-09-2013 02:54 PM: A/C. That tells me right away the clutch is not engaging to compress the air. If the compressor clutch is damaged, it keeps the air Sometimes, when the clutch is worn, the disc is too thin and may not engage properly. Hello All, New to this site and this place is filled with great info. The voltas split ac 1. Joined Aug 4, 2008 · 24 Posts. It is usually almost as economical to replace the complete compressor with clutch installed than to just purchase a clutch. A compressor that won’t engage can often be fixed by a home mechanic for a very small cost by checking the electric components and refrigerant level. I need a little help please. There is not much one can do if the compressor is mechanically or electrically broke except to replace the compressor. I took a peek at the compressor and the clutch doesn't engage. I hook up my metered power supply directly to the clutch coil, vehicle connector removed. Contact Bridwell Auto Service Center today to get a quote for your project. Rarely ac not blowing out cold air is an electrical issue. I didn't hear the compressor go off (it usually does loudly). No harm done if you do this while Clutch on compressor is not turning. There are a few ways to troubleshoot your HVAC system if your AC is not blowing cold air. Make sure your compressor is the Original (OEM) Halla HS18 Compressor. 2 - Is there anything else i can do to verify that it is the clutch, not the compressor itself? I have read that if just the clutch goes, you can get away with replacing the compressor/clutch and not the drier / accumulator etc, as the system has not been contaminated with debris. Test the pressure switch by unplugging it and measuring the resistance between the terminals. In this article, you will learn what you can do during such a situation. what causes an ac compressor to lock up, Mar 05, 2002 · FIELD OF THE INVENTION. The switch on the accumulator is to keep the evaporator from freezing up by cycling the compressor clutch. I would also rec. If you need to use this circuit, you should be aware that there is no component in the circuit that will shut off the compressor if the Freon pressures become too high. HOWEVER, if you cannot turn the compressor on, you cannot recharge your AC levels (grrrr). Comments: Dear Nick, I have a 1998 BMW 323ti compact and the A/C compressor clutch is not engaging. A/C Compressor Clutch do not engage, Cooling Fan do not turn on, Condenser Fan do not turn on, Ceiling light do not turn on when I open a door, emergency brake dashboard indicator always on. It is a simple process and only involves locating the compressor clutch, a. AC compressor intermittent operation causing weakened or intermittent cooling performance. The ac compressor's clutch is not engaging. If these internal parts were to fail, the compressor would fail because of it, resulting in an air conditioner that either does not work at all or does not produce cold air. You wouldn’t want to replace the clutch, only to have the compressor itself fail catastrophically a few weeks later, shooting metal debris into the system. Also be mindful that the refrigerant levels are critical in these cars, so adding a bit to much will not result in better. Non-adjustable id. the compressor is working and all the fuses are working however there is no power to the compressor. A defective compressor clutch can be replaced, but it is generally recommended to replace the entire compressor to save time and additional costs. 2010 Tiffin Zephyr 45 QBZ dash air fan works, but no cold air. The A/C works sometimes, then other times it just stops blowing cold. Both the pulley and the clutch should be spinning. AC compressor clutch is not engaging. The car air conditioner compressor will involve many moving parts that include a piston and valve. Engaging the AC compressor clutch at home is not rocket science. Last fall it worked great. Finally I surrendered and bought a NEW Honda compressor. This is a video that is geared towards people with an AC compressor clutch that doesn't work. 2 - Is there anything else i can do to verify that it is the clutch, not the compressor itself? I have read that if just the clutch goes, you can get away with replacing the compressor/clutch and not the drier / accumulator etc, as the system has not been contaminated with debris. Since it is a random wound magnet wire coil, heat can causing intercoil shorts, current then goes up. if there's no freon. Is there any way to manually engage the clutch? Wire jump? Is it possible to replace the clutch and not the entire compressor, or is this a sign of a failing compressor? Climate issues. Clutch Engaged 1. If the first test is good, check for 12V at B22. I'm not sure, but if the PCM thinks the compressor is running but the coolant pressure and temperature don't reflect that, you should get a code; someone more experienced in A/C. When I jumped my switch the compressor immediately starting blowing cold air again that's how I knew I had a bad switch. Look at the pullyer and you should be able to see if it spining or not. AC+BC=AB and BC should be much less than AC. Because last time I tried to fill up with freon apparently my ac clutch wasn't engaging. Conversion kits are readily available for the A-6. A simple recharge. I'm aware of the AC issues in these Hondas but I'd like to eliminate any other problem before I take it to my mechanic. The mechanic went on to say that its not getting power which would cost 95 bucks for them to diagnose. If the clutch still doesn't engage with all the specifications in tolerance then you can safely assume that there is a mechanical problem or electrical problem and NOT an electrical safety switch trying to protect the system from catastrophic failure. This guy says it should be a relay for the AC clutch, but i couldn't find any fuse box to look similar. To change to clutch assy. No harm done if you do this while Clutch on compressor is not turning. THERMOSTAT SET INCORRECTLY – Check to be sure the thermostat that controls the AC unit is NOT set to FAN ONLY. This is a video that is geared towards people with an AC compressor clutch that doesn't work. (fan still ran, but no clutch engagement) Guess it's time to break down and get the manual. With the air conditioning turned on and the engine running you should look at the engine area to see if the clutch is turning. do not supply direct power or ground to a wire if you do not know what it does. Turning AC on/off reliably turns compressor on/off 15. If I try jumping the relay, nothing happens - no click of the clutch engaging. I'm not sure that the clutch on the Nippondesnso compressor is engaging. Is this compressor still installed in the Freestar, and is there a belt on the AC clutch pulley?. ac clutch not engaging. A defective relay, compressor clutch coil or damaged compressor are all possibilities. As was pointed out, you need to determine if the compressor is engaging and cycling at all, as a first step. That is valid for compressors with internal pressure regulating. I think the mechanics may be reluctant to work on the car because of the risk of damaging the custom paint, etc. When the AC compressor clutch in your car suddenly stops working and does not engage, it could be a sign of serious problem as cool air flow would not be blown into the engine. The A/C switch on the dash switches the compressor on, with one exception. If you understand all the possible causes and want to learn how to diagnose a compressor clutch not engaging condition, this is the post for you How to test AC compressor clutch low pressure cutoff switch First, determine if there’s enough refrigerant pressure in the system to override the low pressure cut-off switch. A6 / S6 (C5 Platform) Discussion - 2. Yet, if it is not engaging, you should use a voltmeter to measure the voltage that gets into the compressor. Turn the air conditioning controls to. If a voltage of 12 DC volts or greater is present on the clutch coil but the clutch isn�t engaging it doesn�t necessarily mean that the clutch coil is bad. Some compressors have a relief valve for regulating pressure. There was just another thread on A/C blowing warm posted. The hard part is getting the clutch. As far as the AC compressor. This part has be a bit stumped bad coil? Now what? It seems like to me that the clutch is just bad and replacing it should do the trick. Also be mindful that the refrigerant levels are critical in these cars, so adding a bit to much will not result in better. There is not much one can do if the compressor is mechanically or electrically broke except to replace the compressor. A defective relay, compressor clutch coil or damaged compressor are all possibilities. When I tested and first drove the car from east bay to San Diego CA for school, the AC was blowing nice and cold. The ETC and AC tables are an OR condition whichever occurs first starts the fan and the highest percentage between the two tables is used. Temperature at grills is 49 F - outside. If there is not enough refrigerant in the system, a low pressure sensor will keep the compressor clutch from engaging. The clutch isn't engaging for a reason, there isn't enough refrigerant in the system. Essentially it is like it is working on a 50% duty cycle, starting and stopping every a few seconds. Temperature at grills is 49 F - outside. Most newer cars have a variable AC compressor, though, and in this case, no AC compressor clutch can fail. The compressor is responsible for processing the refrigerant in a way that cools the entire cabin by making the air blowing through the vents cold. Also, you will have enough refrigerant/pressure in the system (upon start up) that the clutch will engage (but not cycle)providing immediate lubrication and suction to take in the 'Vapor Charge' into the low side port as you finish the charging procedure. Check compressor mounting Torque to specs 8. However, you can still kind of feel when the compressor is kicking in even on newer cars. the compressor is working and all the fuses are working however there is no power to the compressor. No harm done if you do this while Clutch on compressor is not turning. There are a series of protections built into the A/C system to protect the compressor when certain conditions are not met. Contrary to common perception the level of per student expenditure on government schools in Delhi is reasonable, ranging from Fc. Method 1: Add More Coolant What is the most common reason for an air conditioning compressor not to engage?. Discussion Starter • #1. I normally do all my own work, however i have never worked on AC. If you hear the engine change when you toggle the a/c, then almost certainly you are mistaken about the stuck clutch. Even a blockage in the refrigeration circuit can. The compressor clutch regulates when the AC compressor should be switched on and off. 2) Remove the clutch rotor using a puller. Check the comressor to see if the clutch is engaging, if not, or it is going on and off quickly, check the freon level first. I have a 2009 Altima 2. If you find the AC is blowing warm air out through the vents, check the settings of the thermostat or thermostats. Now that the compressor is rotating, you can attempt a recharge. compressor also just stopped engaging. Several A/C systems have a low-pressure cutout switch that prevents the compressor clutch from engaging if system pressure (the refrigerant charge) is too very low. A compressor that won’t engage can often be fixed by a home mechanic for a very small cost by checking the electric components and refrigerant level. Check the voltage supply, inspect the capacitor with a multi meter and weak capacitors will sometimes look swollen or mishapen. I checked the fuses and they are ok. 2004 Audi A6 2. Don't try to rig it or anything, have it fixed correctly. The A/C works sometimes, then other times it just stops blowing cold. 1) Noticed the compressor was not engaging. It should pull in the clutch plate with a snap. If the clutch is not engaging AND you have an adequate charge (145 psi on the low side without the AC running sounds to be in the ballpark), then there is something wrong in the compressor clutch circuit. There are 3 things that you should check, in a specific order,. It is usually almost as economical to replace the complete compressor with clutch installed than to just purchase a clutch. However, we must determine if there is a major un-correctable problem with the compressor. Most newer cars have a variable AC compressor, though, and in this case, no AC compressor clutch can fail. Is there a way I can know that only the. I'm not sure, but if the PCM thinks the compressor is running but the coolant pressure and temperature don't reflect that, you should get a code; someone more experienced in A/C. The clutch coil should simply be tested to determine if coil failure is the cause and it’s easy to do. You wouldn’t want to replace the clutch, only to have the compressor itself fail catastrophically a few weeks later, shooting metal debris into the system. AUTEX AC Compressor Clutch Coil Assembly Kit Compatible with Maxima 2008-2014, Murano 2009-2014 3. If the AC is not blowing cool air into the car, you may want to do a visual inspection of the AC compressor clutch, and determine if you can see what might be causing the clutch to not. Today it suddenly stopped working - compressor clutch will not engage, the The AC did work after I reinstalled the fan controller, for about 45 minutes - so it If so, and you are handy, you should be able to get the clutch only from the dealership. Check the wiring the compressors wiring to be completely sure it is bad. So now I am still trying to figure out if it is a compressor issue, a clutch issue, or some other electrical issue. It also tends to cause undue strain on the compressor bearings as every time it engages, there is a sideward thrust on the compressor shaft which can shorten life span of the compressor as well but mainly the clutch is. Do you have any suggestion? May 19, 2014. I could visibly see the clutch not engaging when it was being commanded to. If there is not enough refrigerant in the system, a low pressure sensor will keep the compressor clutch from engaging. However, you can still kind of feel when the compressor is kicking in even on newer cars. to max/ac that the air coming out of the vents was none too cool. I hook up my metered power supply directly to the clutch coil, vehicle connector removed. 1) Noticed the compressor was not engaging. you only need to unbolt the compressor and prop it up. The compressor is not engaging due to the refrigerant pressure sensor reading low pressure and wanting to protect the compressor. Fan blows, compressor clutch not engaging and condenser fan not switching on but it does blow hot air. Cheaper and simpler to replace the clutch coil. The temporary circuit to control the AC compressor clutch coil is NOT a fix that I would want to use for an extended period of time. (while a/c on max) Clutch clearance can become sticky, make sure the compressor can be turned by hand. If the low side pressure gets too low for an extended period of time the evaporator will freeze up, and the high side pressure will be out of control, possibly damaging the condenser or compressor. The clutch never engaged. Not a tree-hugging enviro-nazi, just try not to intentionally do things like that. If the compressor clutch is damaged, it keeps the air Sometimes, when the clutch is worn, the disc is too thin and may not engage properly. The compressor is responsible for processing the refrigerant in a way that cools the entire cabin by making the air blowing through the vents cold. If your jumping the switch and your clutch is engaging but not blowing cold air it might not be the switch and just low on freon. Having AC air mixed with heater air for defrosting, helps dry the air/defrost quicker/reduce or eliminate condensation on the inside of the windows. the AC compressor doesn't engage. Kick was for the compressor clutch. If you are getting 120V AC to the compressor but the compressor is NOT running when it should be, then the compressor probably has a short and needs replaced. The pressure is okay. That is valid for compressors with internal pressure regulating. I did the possessed car self test thing. Most clutches can be replaced without disconnecting the compressor lines. Here is a list of what I have checked; 1: Refrigerant pressures. Fuse is good. 2010 Tiffin Zephyr 45 QBZ dash air fan works, but no cold air. See pictures of the fuse box inside the engine compartment. 7t AC problem, clutch not engaging - New user here and need a bit of help from some vets. I took it to the same mechanic (they have a 1-year warranty on the work) and they told me they were not able to figure out the problem Furthermore, I did the cabin self-diagnostic function which should detect any problem with the evaporator temperature sensor. here is the list of items I have check. the fans are blowing hard, but when I go under the hood the AC compressor clutch is not engaging (outside of pulley. Only when the clutch engages on the compressor, would the pistons in the compressor move. Did not want to charge the system if there is refrigerant at the correct level. The switch on the accumulator is to keep the evaporator from freezing up by cycling the compressor clutch. I tried to jump the clutch and it did not acuate so I removed the face of the clutch and removed the rust from it with a dremel to see if that would allow it to engage, it still did not. I'm not getting any A/C and the compressor clutch isn't engaging. The clutch still doesn't engage. Ac compressor relay bypass. Popping the hood with maximum air-conditioning selected often reveals the problem of the car AC clutch not engaging. The compressor could be pulling hi amps due to wear and age, low power supply or perhaps a weak start run capacitor. If you can turn the AC on, and tap on the clutch to get it to engage (like the test to see if your clutch gap is too large), a tight AC belt should hold the clutch from turning enough to get the bolt or nut off. The compressor has never made. A/C Compressor Clutch do not engage, Cooling Fan do not turn on, Condenser Fan do not turn on, Ceiling light do not turn on when I open a door, emergency brake dashboard indicator always on. The hard part is getting the clutch. A/C Compressor Clutch Not Engaging. Chevy 350 Air Conditioner Compressor. Turn the air conditioning controls to. The condencer is located in front of the radiator. Dual Fan Compressor Technology: The enhanced compressor performance fosters 50% faster cooling even during acute conditions so you do not feel the discomfort of extreme outside temperature 4-in-1 Filtration With Anion Shield : Your Air Conditioner not only cools but also ensures removal of 99% of harmful PM2. When I do this I can hear the clutch engage with the engine off. chadesand · Registered. Last fall it worked great. The mechanic went on to say that its not getting power which would cost 95 bucks for them to diagnose. Check valve plate 6. The compressor does not come with coil and clutch assembly so I had to purchase them. The Clutch includes all parts needed to replace your old clutch. If the compressor clutch is not engaging, there are many possibilities. Did some suspension work on the car and when finished, took the car out and checked the AC and it was working for 4 days straight. A6 / S6 (C5 Platform) Discussion - 2. Thanks ETA: 2004 AWD automatic. This part has be a bit stumped bad coil? Now what? It seems like to me that the clutch is just bad and replacing it should do the trick. To activate the compressor the clutch is activated. You have two fuse link wires feeding the AC controller, and a voltage spike suppression diode electrically across the compressor coil, but in a different part of the wiring harness. Venting is a $10,000 fine if you get caught plus it's just not good for the environment. I checked the fuse and the relay associated with the A/C system and both are fine, so it's not related to that, however, I was wondering if there's a way to test for clutch operation?. 3) Jumped the air conditioning circuit at the relay with the engine running, but the clutch does not engage. There is a low pressure sensor that will no let the clutch engage if the freon pressure is low. I tried to jump the clutch and it did not acuate so I removed the face of the clutch and removed the rust from it with a dremel to see if that would allow it to engage, it still did not. If you can turn the AC on, and tap on the clutch to get it to engage (like the test to see if your clutch gap is too large), a tight AC belt should hold the clutch from turning enough to get the bolt or nut off. I checked the R134 pressure at the low and high. I installed the new A/C compressor clutch today (it was easy--no trouble with the central bolt--the eBay clutch came with the wrong wiring connector, so I spliced on the old one). While the bolts weren't going on the clutch mating surface, as they bent one did get dangerously close to going into the bearing race of the pulley. The ac compressor's clutch is not engaging. I probably should have used something like this or maybe this, although one AC clutch service video:. If the clutch still does not engage, it might be a bad AC compressor clutch. The integrity of the clutch coil can be tested on the car using an ohmmeter. Denso Ac Compressor Review. I'm not sure that the clutch on the Nippondesnso compressor is engaging. fan doesn't turn on. Thanks ETA: 2004 AWD automatic. I have checked the fuse-Good, I have swapped relays-Good. If you get that the air conditioning (AC) compressor clutch is not engaging in your car, you might need to get some answers. Most likely the fault 01232 AC compressor regulator valve n280 cause to not engage the compressor. 95V (i read somewhere that should be 12V) 5. Comments: Dear Nick, I have a 1998 BMW 323ti compact and the A/C compressor clutch is not engaging. The clutch coil should simply be tested to determine if coil failure is the cause and it’s easy to do. Popping the hood with maximum air-conditioning selected often reveals the problem of the car AC clutch not engaging. But if the compressor isn't working during dry weather, it shouldn't be working during wet weather. A drive belt powers the clutch, which works to engage the compressor when the air conditioning in the car is switched on. If you hear the noise coming from the ac clutch, but the clutch is not engaging and spinning, most likely there is a short in the internal clutch. one of its pins would have 12V with engine running, a/c on and then the remaining one goes to compressor clutch. Remember that these are a guideline and your actual temperatures and pressures will vary depending on humidity in the air and the condition of your system. You wouldn’t want to replace the clutch, only to have the compressor itself fail catastrophically a few weeks later, shooting metal debris into the system. When I jumped my switch the compressor immediately starting blowing cold air again that's how I knew I had a bad switch. It can fail because the coil is shorted or open, in which case it can be repaired by replacing the coil (on the right in the picture) You can test the coil by applying 12 volts to it directly. Clean the connections – Problems with ac clutch engagement often involve electrical issues. In an automobile air conditioning system, a working fluid or coolant is pumped through a series of tubes and mechanisms to change its pressure repeatedly, resulting in an overall drop in temperature. 摘要: If one or both of your idlers are making an unusual sound (they should make no sound), is wobbling or vibrating, it will need to be replaced or restored. The air conditioning clutch could be not working for the refrigerant could be low or the clutch could be burned up. It would cool and after a few minutes, it would stop I replaced the cooling fan that comes on when A/C is engaged. I think the mechanics may be reluctant to work on the car because of the risk of damaging the custom paint, etc. 3) Jumped the air conditioning circuit at the relay with the engine running, but the clutch does not engage. (while a/c on max) Clutch clearance can become sticky, make sure the compressor can be turned by hand. AC compressor clutch not engaging. Hello, My AC is not working. ac clutch not engaging. Most, but not all, automobile air conditioning systems are switched on and off by using an electromagnetic clutch. If your Air Conditioning compressor isn't working (the clutch won't engage) then watch this video. Will low refrigerant level cause the AC compressor clutch to not engage - Motor running I replaced relay after doing this and it engages on its own now. This should engage the compressor clutch. Hello I am working on a 1965 Fastback and the challenge is with the AC. I'm not sure that the clutch on the Nippondesnso compressor is engaging. If the first test is good, check for 12V at B22. The compressor relay is "clicking" and staying engaged, so I don't think its low or that wouldn't happen. The voltas split ac 1. My Ridgeline has power to the clutch but it is not engaging. The clutch never engaged. You may have to register before you can post: click the The fan kicks on all the time in stop and go traffic if the temperature is above 85* or so. The 4th day coming home from work I noticed it was blowing warm air and that the compressor clutch wass not engaing when turned on. The ETC and AC tables are an OR condition whichever occurs first starts the fan and the highest percentage between the two tables is used. Turning AC on/off reliably turns compressor on/off 15. I looked at the compressor clutch with the engine running and the AC on, and it wasn't spinning. checked ac circuit relaay and its functioning fine. Manufacturers do their best to mask both of these symptoms of a properly operating air-conditioning system. But if the compressor isn't working during dry weather, it shouldn't be working during wet weather. you only need to unbolt the compressor and prop it up. If the compressor is bad, it makes more sense sometimes to just buy a new refrigerator. This should engage the compressor clutch. Now my question is in order for the compressor to kick on it needs to be grounded. No harm done if you do this while Clutch on compressor is not turning. It has always worked great so it suprises me that it stopped. Because last time I tried to fill up with freon apparently my ac clutch wasn't engaging. The ac clutch is not engaging when i turn on the A/C, it just blows out air (not cold). The compressor clutch will kick on and run when the 2 pins on the relay are jumped, the coil side of the relay has power but is not getting a ground signal. If your AC compressor clutch doesn't engage, it means that your car will not be able to blow cool air into the vehicle. FSM says that this red/blue wire should see a 12v source. Several A/C systems have a low-pressure cutout switch that prevents the compressor clutch from engaging if system pressure (the refrigerant charge) is too very low. I've checked the voltage on the blue/yellow wire to the compressor and it shows 14V when AUTO selected (and pretty much zero when in ECON). When the AC compressor clutch in your car suddenly stops working and does not engage, it could be a sign of serious problem as cool air flow would not be blown into If your repeated tests have already gone wrong, and you have still not been able to manually engage the AC compressor clutch, then it. compressor also just stopped engaging. Your AC should only run when it is either on the two AC settings or when it is on the Defrost only setting or the mix of defrost and heat to the lower vents. I believe it should shut off when in defrost mode when outside air gets cold, but I do not know if this is true. That all said, if you find that you have power and ground to your compressor clutch and it still does not turn on, then you have a bad clutch. The computer is not throwing any codes. Sounds like your just out of freon and that could be why your clutch isn't engaging. That tells me right away the clutch is not engaging to compress the air. The fuse doesn't look broken. 3) Remove the bearing from the clutch rotor. Disclaimer – This is not an actual quote. I have a 2005 Accord V6 3. Now that I'm down here I've noticed that I'm not getting any cold air. Identify the location of your compressor. At the front of the compressor, within the pulley, is a magnetic coil. I took it to the same mechanic (they have a 1-year warranty on the work) and they told me they were not able to figure out the problem Furthermore, I did the cabin self-diagnostic function which should detect any problem with the evaporator temperature sensor. AC compressor clutch is not engaging. The mechanic went on to say that its not getting power which would cost 95 bucks for them to diagnose. I'm about to remove the compressor and clutch assembly and check. When a compressor clutch does not disengage, it will cause the refrigerant to build up and freeze the line. No AC, no clutch engaging, no cool air. AC Clutch Not Engaging. Hi, I decided to check my ac the other day and the compressor is not engaging. You can replace this clutch in many AC compressors or even remove shims for the clutch for it to work a little bit more. The A/C works sometimes, then other times it just stops blowing cold. The wiring to the clutch coil could also be starting to short out, explaining why it would blow cold for 20 minutes and then stop. The AC relay tests ok; however, I do NOT hear/feel the AC relay activate which may indicate the ECU isn't sending 12v to the relay (more on this below). Manufacturers do their best to mask both of these symptoms of a properly operating air-conditioning system. There was just another thread on A/C blowing warm posted. Contrary to common perception the level of per student expenditure on government schools in Delhi is reasonable, ranging from Fc. Dual Fan Compressor Technology: The enhanced compressor performance fosters 50% faster cooling even during acute conditions so you do not feel the discomfort of extreme outside temperature 4-in-1 Filtration With Anion Shield : Your Air Conditioner not only cools but also ensures removal of 99% of harmful PM2. (Last Updated On: August 6, 2019) Few things are worse than a malfunctioning air conditioning system in the sweltering summer heat. The first thing I did was check the fuse for the compressor. Alternatively they could have disturbed something else while working on it or a stone may have punctured the condenser. Make sure your compressor is the Original (OEM) Halla HS18 Compressor. Checking to see if the compressor clutch is engaging is a simple visual inspection. I'm not sure, but if the PCM thinks the compressor is running but the coolant pressure and temperature don't reflect that, you should get a code; someone more experienced in A/C. I took a peek at the compressor and the clutch doesn't engage. If you experience your car's air conditioning (AC) clutch compressor is not engaging, you may want to know why and find some answers. However, we must determine if there is a major un-correctable problem with the compressor. So my ac clutch isnt engaging when i hit the switch, but the car idles up. I've ignored it for a couple of years since I haven't needed AC, but I'm heading across the midwest next week so I'm considering fixing it. The compressor could be pulling hi amps due to wear and age, low power supply or perhaps a weak start run capacitor. A/C stopped working suddenly so I had a shop take a look at the issue and they advised that power was getting to the clutch but it was not engaging. If this clutch is too worn, it may cause the AC compressor not to start at all. So I think my problem. Joined Aug 4, 2008 · 24 Posts. Contact Bridwell Auto Service Center today to get a quote for your project. Next, verify adequate pressure with a manifold gauge. (engine OFF) beyond that, like everyone said you need to have the charge level checked out. The AC compressor clutch is the first thing that moves every time you turn on your AC. There was just another thread on A/C blowing warm posted. Amazoncom Tuparts Air Conditioning Compressor And Clutch What Should I Do If Ac Compressor Clutch Is Not Engaging Signs Of A Bad Or Failing Ac Compressor Relay. AC compressor clutch not engaging. I have checked the fuse-Good, I have swapped relays-Good. It should pull in the clutch plate with a snap. If the compressor is bad, it makes more sense sometimes to just buy a new refrigerator. It does not run when on the other settings. But if the compressor isn't working during dry weather, it shouldn't be working during wet weather. Wiggle relay, and it starts again 13. If the compressor clutch is not engaging, there are many possibilities. You may have to unbolt the compressor to tilt it so you can get to the front of the compressor. It has always worked great so it suprises me that it stopped. Essentially it is like it is working on a 50% duty cycle, starting and stopping every a few seconds. here is the list of items I have check. If you are experiencing issues with your AC system and suspect that your AC relay has either failed or is beginning to fail, we recommend having it diagnosed by a professional. If I try jumping the relay, nothing happens - no click of the clutch engaging. I need a little help please. 2007 pt cruiser ac compressor fuse. It's a SANDEN compressor. There was just another thread on A/C blowing warm posted. -AC compressor clutch does not engage but spins freely by hand. See pictures of the fuse box inside the engine compartment. Dual Fan Compressor Technology: The enhanced compressor performance fosters 50% faster cooling even during acute conditions so you do not feel the discomfort of extreme outside temperature 4-in-1 Filtration With Anion Shield : Your Air Conditioner not only cools but also ensures removal of 99% of harmful PM2. It has always worked great so it suprises me that it stopped. AC clutch does not engage. The compressor has never made. The A/C clutch is electromagnetic. 95V (i read somewhere that should be 12V) 5. Turn off engine, turn back on again, turn on AC - compressor not running again. If I put voltage on the clutch wire. In an automobile air conditioning system, a working fluid or coolant is pumped through a series of tubes and mechanisms to change its pressure repeatedly, resulting in an overall drop in temperature. 8 out of 5 stars 13 $46. 5 fuse in the relay box and the 10A fuse in the interior fuse box. compressor also just stopped engaging. it was a donor from the start the previous owner before me gave it to me. To change to clutch assy. Jump to Latest Follow 1 - 8 of 8 Posts. There are a few ways to troubleshoot your HVAC system if your AC is not blowing cold air. A/C Compressor Clutch do not engage, Cooling Fan do not turn on, Condenser Fan do not turn on, Ceiling light do not turn on when I open a door, emergency brake dashboard indicator always on. Mechanic's Assistant: Is the power loss consistent, or does it fluctuate?. If you are experiencing issues with your AC system and suspect that your AC relay has either failed or is beginning to fail, we recommend having it diagnosed by a professional. I have a 2005 Accord V6 3. However, you can still kind of feel when the compressor is kicking in even on newer cars. HOWEVER, if you cannot turn the compressor on, you cannot recharge your AC levels (grrrr). to turn the A/C compressor off if the pressure is too low, to save it from burning out if the system is empty. On my sons 99 Jeep Wrangler Sahara the AC clutch will not engage. Engaging the AC compressor clutch at home is not rocket science. Heating and Ventilation. My AC compressor does not engage after I drive a long incline (which causes a slight temp rise, one tick over 210). Rarely ac not blowing out cold air is an electrical issue. Get a Denso with clutch installed. That is valid for compressors with internal pressure regulating. I had a free diagnostic run at Midas for my ac and my compressor is not engaging. Hot air coming out of your Audi’s air conditioner can be attributed to several potential issues: Wearing compressor. It was fine. Also the aux. If these internal parts were to fail, the compressor would fail because of it, resulting in an air conditioner that either does not work at all or does not produce cold air. It does not run when on the other settings. I've checked the voltage on the blue/yellow wire to the compressor and it shows 14V when AUTO selected (and pretty much zero when in ECON). The centre section of the air con compressor - the one with the 3 circular "bolts" on it, does not spin either with AUTO engaged. fan doesn't turn on. Look at the pullyer and you should be able to see if it spining or not. No change in temp and compressor clutch is still not engaging. I've ignored it for a couple of years since I haven't needed AC, but I'm heading across the midwest next week so I'm considering fixing it. If the AC compressor clutch is motionless with the AC running, there's a problem with the compressor. If a voltage of 12 DC volts or greater is present on the clutch coil but the clutch isn�t engaging it doesn�t necessarily mean that the clutch coil is bad. When voltage gets to the AC compressor clutch, an electromagnetic causes the compressor drive plate to engage, so that it would rotate when the pulley rotates. If you hear the engine change when you toggle the a/c, then almost certainly you are mistaken about the stuck clutch. The A/C clutch is electromagnetic. Its not the relay and it isn't the HVAC controls. checked ac circuit relaay and its functioning fine. If the clutch doesn't engage, the air conditioning compressor can't pump refrigerant. So I think my problem. Non-adjustable id. The air conditioning clutch could be not working for the refrigerant could be low or the clutch could be burned up. Essentially it is like it is working on a 50% duty cycle, starting and stopping every a few seconds. If the compressor is bad, it makes more sense sometimes to just buy a new refrigerator. Jump to Latest Follow 1 - 5 of 5 Posts. So now I am still trying to figure out if it is a compressor issue, a clutch issue, or some other electrical issue. A defective relay, compressor clutch coil or damaged compressor are all possibilities. The AC compressor clutch is not engaging even when both the AC and the radiator fan are turning on. I have checked the fuse-Good, I have swapped relays-Good. The compressor clutch will kick on and run when the 2 pins on the relay are jumped, the coil side of the relay has power but is not getting a ground signal. The air would continue to blow ambient or hot just never cold. So 35 PSI R134a is 40 degrees - the range the switch should kick off the compressor. Now that the compressor is rotating, you can attempt a recharge. The pulley spins any time the engine is running. If you replace the compressor, you need to make sure you clean out the system completely or you'll just trash the new compressor. If you experience your car's air conditioning (AC) clutch compressor is not engaging, you may want to know why and find some answers. I am having the same issue no fan and no clutch. Air Conditioner Compressor Troubleshooting | Additional Test. This is a video that is geared towards people with an AC compressor clutch that doesn't work. The AC clutch is not engaging when the switch is turned on. I have checked the fuse-Good, I have swapped relays-Good. Rarely ac not blowing out cold air is an electrical issue. AC clutch does not engage. If the a/c compressor clutch isn’t engaging, the issue could be due to a blown fuse or the clutch itself having gone bad. While you are changing compressors, and the system is already purged, this would be a good time to consider doing a changeover to R-134a. The Clutch includes all parts needed to replace your old clutch. The compressor is a vital and expensive component, and when it goes you may find yourself dropping a lot of cash on a new AC unit. I checked the relay and that is fine. The engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. If you hear the engine change when you toggle the a/c, then almost certainly you are mistaken about the stuck clutch. If the AC is not blowing cool air into the car, you may want to do a visual inspection of the AC compressor clutch, and determine if you can see what might be causing the clutch to not. While you are changing compressors, and the system is already purged, this would be a good time to consider doing a changeover to R-134a. There is no need to replace the whole compressor. Also be mindful that the refrigerant levels are critical in these cars, so adding a bit to much will not result in better. The fan will still run but no cold air. The AC relay tests ok; however, I do NOT hear/feel the AC relay activate which may indicate the ECU isn't sending 12v to the relay (more on this below). Just had a new clutch replaced. You will still not have an answer until you jumper the pins in the switch connectors to know which one does what. Thanks ETA: 2004 AWD automatic. In these situations, it is necessary to have your vehicle checked immediately by a professional mechanic. The clutch never engaged. The fuse doesn't look broken. The clutch resembles a small circular gear, and it helps engage the compressor belt. There are a couple of ways you can fix the problem to bring back the air It is an ominous sign when the clutch engages but the compressor does not spin. I would like to be able to fix it myself or diagnose it so Ford just doesn't tell me "you need a new ac compressor" and I need to pay $1000 I don't have. If it moves around the bearings and seal are probably bad and no need to just replace the clutch. I normally do all my own work, however i have never worked on AC. Could easily spin compressor hub by hand. If the compressor clutch shoe is not rotating, but the pulley is, then you can unplug the electrical connection on the low pressure switch and put a jump wire into the harness jumping the connection on both terminals. As far as the AC compressor. here is the list of items I have check. When I jumped my switch the compressor immediately starting blowing cold air again that's how I knew I had a bad switch. hd071502 · Registered. So I bought a refurb compressor and replaced the old one. I've ignored it for a couple of years since I haven't needed AC, but I'm heading across the midwest next week so I'm considering fixing it. fan doesn't turn on. While you are changing compressors, and the system is already purged, this would be a good time to consider doing a changeover to R-134a. The fluid starts in the AC compressor driven by an ac compressor clutch pulley system where it is put under pressure. Essentially it is like it is working on a 50% duty cycle, starting and stopping every a few seconds. No leaks and refrigerant charge was fine. I installed the new A/C compressor clutch today (it was easy--no trouble with the central bolt--the eBay clutch came with the wrong wiring connector, so I spliced on the old one). Don't try to rig it or anything, have it fixed correctly. I took it to the same mechanic (they have a 1-year warranty on the work) and they told me they were not able to figure out the problem Furthermore, I did the cabin self-diagnostic function which should detect any problem with the evaporator temperature sensor. If the compressor clutch is not engaging, there are many possibilities. Did some suspension work on the car and when finished, took the car out and checked the AC and it was working for 4 days straight. The face of the clutch/pulley assembly shouldn't be turning when the a/c isn't on. If I keep the RPM of the truck over 3000-3500 the a/c will start working again. You may have to register before you can post: click the The fan kicks on all the time in stop and go traffic if the temperature is above 85* or so. Compressor Not Engaging. Heating and Ventilation. If you run power straight to the clutch the A/C runs cold all day long. When running the car at idle to check the freon level it is a good idea to have a water hose handy and spray water on the a/c condencer. When you ID the two that run fan then the one remining is the compressor cut out. AC compressor intermittent operation causing weakened or intermittent cooling performance. Why AC clutch won’t engage If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. When I jumped my switch the compressor immediately starting blowing cold air again that's how I knew I had a bad switch. So if the clutch will not be engaging, check the refrigerant charge and the cutout switch. The other two wires are ground coming from ECM to compressor. Also, if pressure is where it should be, then I am going to ask you to check the wire that runs to the compressor clutch to see if it gets power when you turn on the AC. If you find the AC is blowing warm air out through the vents, check the settings of the thermostat or thermostats. When this happens the clutch is not engaged. The air conditioning clutch could be not working for the refrigerant could be low or the clutch could be burned up. I would also rec. I'm about to remove the compressor and clutch assembly and check. Also, you will have enough refrigerant/pressure in the system (upon start up) that the clutch will engage (but not cycle)providing immediate lubrication and suction to take in the 'Vapor Charge' into the low side port as you finish the charging procedure. A drive belt powers the clutch, which works to engage the compressor when the air conditioning in the car is switched on. If the clutch doesn't engage, the air conditioning compressor can't pump refrigerant. Problem is with AC systems is to do it RIGHT you need tools most people don't have. Hello, My AC is not working. I think the mechanics may be reluctant to work on the car because of the risk of damaging the custom paint, etc. 2 - Is there anything else i can do to verify that it is the clutch, not the compressor itself? I have read that if just the clutch goes, you can get away with replacing the compressor/clutch and not the drier / accumulator etc, as the system has not been contaminated with debris. You should use the proper tools when changing the clutch hub so as not to damage the compressor or clutch and coil assembly. Not so much the electrical system but the compressor clutch, both the actuating coils and the clutch itself (friction discs). I did some work on the car over the winter and now the clutch is not engaging. I'm not sure, but if the PCM thinks the compressor is running but the coolant pressure and temperature don't reflect that, you should get a code; someone more experienced in A/C. When the compressor is spinning, the air conditioning system blows cool air, not cold, but just cool. When running the car at idle to check the freon level it is a good idea to have a water hose handy and spray water on the a/c condencer. This part has be a bit stumped bad coil? Now what? It seems like to me that the clutch is just bad and replacing it should do the trick. Engaging the AC compressor clutch at home is not rocket science. (Pulley Front Plate and Coil). I know a low charge of freon will stop engagement. It does not run when on the other settings. Which brings me to NOTE #2: I DO NOT RECOMMEND THIS METHOD. (fan still ran, but no clutch engagement) Guess it's time to break down and get the manual. The computer is not throwing any codes. These cars have a temp switch which keeps the a/c compressor from engaging if it is too cold outside. need a little advice on what to check next. Denso Ac Compressor Review. My best guess is that the clutch is not engaging. So now I am still trying to figure out if it is a compressor issue, a clutch issue, or some other electrical issue. Switch the relay from the fog lights to the AC 14. Joined Aug 4, 2008 · 24 Posts. The car is an 03 wrx. but i have no voltage at the fuse for the ac compressor. See pictures of the fuse box inside the engine compartment. Changing the compressor clutch could be the only solution in this case. Heating and Ventilation. These parts, along with other of your vehicles' components should be properly maintained to assure its serviceability. I looked at the compressor clutch with the engine running and the AC on, and it wasn't spinning. I had a free diagnostic run at Midas for my ac and my compressor is not engaging. Turn the air conditioning controls to. I do not have any gauge to check it. Checking to see if the compressor clutch is engaging is a simple visual inspection. The AC clutch is not engaging when the switch is turned on. I (think I) have a coil going bad. Rarely ac not blowing out cold air is an electrical issue. Temperature at grills is 49 F - outside. Set it for 14. When this is energised it pulls in the front plate of the compressor with a distinctive ‘click’. The compressor has a pulley and clutch assembly on the front to allow the belt to always be attached to the engine, and to also allow the compressor to engage and disengage with the clutch. THERMOSTAT SET INCORRECTLY – Check to be sure the thermostat that controls the AC unit is NOT set to FAN ONLY. If you understand all the possible causes and want to learn how to diagnose a compressor clutch not engaging condition, this is the post for you How to test AC compressor clutch low pressure cutoff switch First, determine if there’s enough refrigerant pressure in the system to override the low pressure cut-off switch. Specifically, we're talking about the compressor clutch. I realized that the a/c compressor was not engaging anymore. Not so much the electrical system but the compressor clutch, both the actuating coils and the clutch itself (friction discs). OK I knew, something is with AC. 2) Hooked up the AC gauges - static pressure is 75 PSI at In post #6 I have stated that compressor clutch coil should have 10-20 ohms resistance. 2 - Is there anything else i can do to verify that it is the clutch, not the compressor itself? I have read that if just the clutch goes, you can get away with replacing the compressor/clutch and not the drier / accumulator etc, as the system has not been contaminated with debris. Sounds like your just out of freon and that could be why your clutch isn't engaging. In this video, I show you how to tell if a car's AC compressor clutch is engaging. If this is your first visit, be sure to check out the FAQ by clicking the link above. On the Prospects for a Unified Social Science: Economics and Drupal-Biblio. You may have to register before you can post: click the The fan kicks on all the time in stop and go traffic if the temperature is above 85* or so. When this is energised it pulls in the front plate of the compressor with a distinctive ‘click’. 5L Replacement for Pathfinder 2003-2015 Quest 2011-2015 3. Is there a circuit in a 82 or 83 280ZX that will not let the AC compressor operate until the motor is warm? A5. he always mentioned how it was the bigger one and I’m not sure. Compressor cycles on now, but only very briefly (1 second) every few minutes, and the vents are still blowing warm air. there's also no voltage to the compressor. It didn't make a clicking noise when the AC was cycled on and off, either. giving a tap on the front of the compressor with a wooden handle of a hammer. While you are changing compressors, and the system is already purged, this would be a good time to consider doing a changeover to R-134a. Here is a list of what I have checked; 1: Refrigerant pressures. The temporary circuit to control the AC compressor clutch coil is NOT a fix that I would want to use for an extended period of time. But if in case the clutch does engage but the compressor fails, then you need a new compressor. Even a blockage in the refrigeration circuit can. As far as the AC compressor. Ac compressor relay bypass. AC compressor clutch not engaging. 5 Volts and read the clutch current, should read around 4 amps. Now, the A/C does not come on at all. To activate the compressor the clutch is activated. When I jumped my switch the compressor immediately starting blowing cold air again that's how I knew I had a bad switch. If a voltage of 12 DC volts or greater is present on the clutch coil but the clutch isn�t engaging it doesn�t necessarily mean that the clutch coil is bad. If the compressor clutch does not engage, the AC compressor clutch coil has a open and has to be replaced with the "PROPER TOOLS". Its not the relay and it isn't the HVAC controls. You may have to unbolt the compressor to tilt it so you can get to the front of the compressor. I installed the new A/C compressor clutch today (it was easy--no trouble with the central bolt--the eBay clutch came with the wrong wiring connector, so I spliced on the old one). Finally I surrendered and bought a NEW Honda compressor. The engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. It should pull in the clutch plate with a snap. At the front of the compressor, within the pulley, is a magnetic coil. Kick was for the compressor clutch. Usually the head unit controls mixing to get the temperature you want, otherwise the AC compressor's clutch is always engaging/disengaging, which would lead to premature failure since your rpm's are not low most of the time. No change in temp and compressor clutch is still not engaging.