What is the most common reason for an air conditioning compressor not to engage? This is a video that is geared towards people with an AC compressor clutch that doesn't work. Rust accumulation on clutch plate and pulley or incorrect air gap. Spray the running side of the belt and see if the … The clutch without power is suppose to spin or turn when turning it by hand. The clutch will normally 'engage' with a clicking sound if it working. Bad clutch coil or improper air gap. Cannot find Magnetic Clutch Relay. It’s important that your power is off so that you don’t shock yourself when checking the compressor. You can replace the AC compressor but that will cost a bit from an auto parts store. The only way I get it to turn off is when I turn the fan off or press the A/C button. Connect your negative, or black battery cable with the grounded contact in the compressor. then, drive. If it just needs more refrigerant, would you recommend even trying one of those? Thanks for the reply. You should have about 14 bar on the high-pressure side and 2.5 bar on the low-pressure side when the AC compressor switch is pumping and working. Some refrigerant will escape, but as long as you get the new valve in quick enough, air will not get into the system. Also, it was Chinese manufactured, and the directions for gauge use were very poorly written. They were very tight on the ones they fit on and would just not go on some others. Try the windex. On the contrary, the AC continued to work properly. Measure with a feeler gauge and adjust as advised by the manufacturer. The 18 oz bottle still has some in but I neglected to weigh it beforehand so it's hard to say how much material was used. I was wondering if that difference in feel could be used to help diagnose the A/C. Typically you can grip the clutch with your hand and turn the compressor, but it is not easy. On the Santa Fe the clutch will not turn even without power. They felt different when turning by hand with the engine turned OFF. Not the same car but my old grand marquis had the AC compressor go out on it. Option 2  buy same can with the ghetto pressure gauge attached. When the AC system is turned "off" the power to the AC clutch assembly is 11.5 volts. That depends . On the contrary, the AC continued to work properly. 4. 3. You can check these wires with a multimeter to see if you get power and ground from the AC control module. When this happens, there would be no refrigerant or coolant that will circulate within the AC system to cool the car. The AC compressor continued to turn even after I pulled the 12-volt supply wire to the unit. Engaging the AC compressor clutch at home is not rocket science. Is there an easy way to tell whether the A/C clutch failed, or the compressor? Interesting feedback on the gauges, if I buy a set I will shop around to see what's available besides HF. What is the most common reason for an air conditioning compressor not to engage? For … I know that the system was converted to a more modern variant, at least that's what they told me as I recall. this is often effective at mitigating leaks. Turn off the power leading to your air conditioning unit. This will allow the compressor drive and the engine to … The symptoms were flashing air con indicator when air con switched on and under the bonnet the clutch ( the centre part of the air con pulley connected to the compressor) would not kick in, it would however turn by hand indicating that the compressor was not seized. Most independent shops will replace the entire compressor as most aftermarket parts suppliers do not make just clutch or coil replacement parts. how to manually engage ac compressor clutch. May 11, 2009. For what it is worth, I bought the A/C gauge set from Harbor Freight a couple of years back. The fan works fine but it just blows ambient temp air. Yes No. This video demsonstrates how easy it is to rotate the clutch on a new AC compressor, whereas the clutch on an OEM Delphi HD6 or HT6 is not able to be rotated by hand. Dear all experience people, I have 2003 Lincoln Town Car, it's been good with me since I had it brand new but last month the AC had problem and I already try the best to fix it but the compressor is still not engaging, if I connect directly pin 1 and pin 5 of the relay then the compressor was engaging and AC cold but I can't stop the compressor until turn off the engine. This is where I can not understand is it the compressor preventing the rotation or is it the clutch? I've done it countless timeson Subarus - it's way overhyped by folks that don't know what they'retalking about or HVAC people that only know one way of doing it and makemad loot off a public that's terrified of A/C systems. The next time that happens see if you can turn the compressor by hand, if you can then perhaps this is the case. This switch is located on the metal canister next to the compressor. You can buy one of the recharge kits at the parts store. outback_97, October 27, 2014 in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX. Why AC clutch won’t engage. Suspected Clutch Rotor Bearing Noise. 2004 Lincoln Aviator. If excessive roughness or wobble is found, replace the clutch rotor assembly. If it is not listed in the application section then… 2. Reading the Maintenance Tips frequently can help you with that. I would get a set of these gauges if you are comfortable with working on an AC system. If you get that the air conditioning (AC) compressor clutch is not engaging in your car, you might need to get some answers. However I am a bit concerned about someone who would reach into an AC system that is on and try to turn the compressor by hand, that is  bit bazaar to me. The next DIY step up from that I think would involve buying an A/C pressure gauge set from Harbor Freight. That would be cheaper but you get what you pay for. With all the automotive jargons we’ve discussed earlier, you might think that learning how to manually engage the AC compressor clutch is true rocket science. (Yea, I know the environmentalist don't like people venting 134a to the atmosphere, but then the same thing happens when your system develops a leak) So, I don't feel too guilty. I've done gobs of Subaru A/C work and it's easy. The low-pressure switch tells the car that the clutch needs to engage and disengage and will shut off the A/C compressor. What have you tried so far? Put a little oil in the intake port and turn until some oil might come out. 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. To me "close" on correct amount is good enough, and I bet I have serviced some 50+ cars this way, with no problems. Now, turn on the air conditioning and look again. It doesn't hurt to have a guage set IF you plan to do AC work on a lot of cars. The low-pressure switch tells the car that the clutch needs to engage and disengage and will shut off the A/C compressor. add proper amount of refrigerant - two of the normal sized small cans works for all Subarus and i'll even add that without using gauges if it's an empty system. It would not disengage. The set seemed okay, but it seems designed for commercial use, not for the DIY kits, or individual 13 oz cans available at an auto parts store. A/C Magnetic Clutch is not engaging when A/C button pressed. I then bled that out thru the Schrader to the atmosphere, thinking this would also pull out a good share of any moisture and atmosphere from the system. Have an assistant turn on the AC controls to maximum. if it barely pssssttt out, then it's basically all drained from leaking - this is the most likely outcome. 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. Was this answer helpful? Any help here would be appreciated. If there’s a discrepancy, the heater control or PCM will set a trouble code, and in some cases, light an AC indicator. How To Manually Engage AC Compressor Clutch. There is a pressure switch which detects that there is enough gas and if not the ac clutch won't engage. I've done it countless times on Subarus - it's way overhyped by folks that don't know what they're talking about or HVAC people that only know one way of doing it and make mad loot off a public that's terrified of A/C systems. Also, sometimes not using the compressor or the AC system makes it passive, and you may have to get it checked. A 12 oz can will usually do it for the newer systems that only hold 17-19 oz. He had it regassed as that was the first thought( low gas). if it's busts out fast and some oil comes with it and it made you jump - it's still under nearly full charge. There are a couple of ways you can fix the problem to bring back the air conditioning system in order. 1. how to manually engage ac compressor clutch. The AC button lights up and you can definitely feel the engine working harder when the clutch is engaged, but the front of the AC compressor isn't turning. If the compressor is removed from the engine, the belt-pulley should spin freely. Charging with liquid Freon can overload the system, dilute the circulating oil, and cause damage to the compressor. patrick mannion of Greg Solow's Engine Room on . 3. Mechanic's Assistant: Has the clutch been slipping? Compressor clutch is not moving. I would put gauges on first. 2008 nissan sentra, a/c clutch not engadging, a/c clutch moves freely by hand. It locked up completely, breaking the belt as well. I bought a better set at O'Rielly's and it has worked very well for me. If the clutch does not engage, then check the clutch ground connection and coil resistance. We use cookies to give you the best possible experience on our website. Thanks again. Diagnosing A/C... should the compressor turn easily by hand? Drop me a note if interested at fish6525@yahoo.com...........Rooster2. I have a 1997 Saturn SC2. Thanks! The AC compressor-clutch doesn't activate unless the signal-wire has voltage applied to it (this happens when the refrigerant is at the correct pressure). It would not disengage. But it sounds like to use that correctly, one really needs a vacuum pump and that's another thing that I don't have. When the refrigerant leaks out, it not only increases the potential harmful health concerns but also increases your energy consumption. You dont think by chance the belt is slipping perhaps? The good set only cost me about $20 more than the one from Harbor Freight. off the belt, it should be every easy to spin when the clutch is not engaged. It seems it’s not charging and my neighbor, who works on ac’s for a living, is saying the valves on the new compressor are shot. It seemed possessed! At this time there was power at the magnetic clutch +ve wire but not now for some reason. Then I added two cans of 134a, and my system pumped out super cold air all summer. I had a set of gauges from Harbor Freight but the connectors were so poorly manufactured that they did not fit on all the R134 systems that I had. If you can feel binds, then you know you have compressor problems. If resistance is not … 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX. When I compared it to my wife's 03 Impreza, turning the front part of the compressor offers quite a bit more resistance in the working A/C (the '03). To clarify, I was comparing the feel of hand turning the part of the A/C compressor that you see when looking at the front of the engine. Where-as one that is fully charged will have more resistance. Hello, my AC stop working just like that .... check under the hood and notice the AC pulley not spinning when the car is still running! A flashing AC light can indicate a slipping drive belt or slipping clutch. Then I continued adding more until I was in the proper range according to the built in gauge. If the clutch engages, then check the power supply to the clutch, including the system protection devices and electronic compressor controls. Here, we have simplified three methods of engaging an AC compressor clutch all by yourself. i just replaces my compressor. Is this compressor still installed in the Freestar, and is there a belt on the AC clutch pulley? AC compressor clutches receive power in a number of ways. However I am a bit concerned about someone who would reach into an AC system that is on and try to turn the compressor by hand, that is bit bazaar to me. This is a full explanation of how the system works. Even tape is good enough, a there should have been slight residual oil layer on the metal surfaces. Method 1: Add More Coolant. To determine if the clutch is operational or not, try these techniques: Switch on the AC controls to MAX AC; Run the engine Could try to find one in a bone-yard. The AC compressor exhibited no unusual symptoms that would explain the locked clutch, there was no bearing failure, no unusual noise, no smoke, no fire. 21 Posts #11 • Aug 24, 2015. They … If leaking refrigerant, then the leak will need to be fixed. I have double checked the electrical connection on the compressor and removed the belt and turned it by hand to make sure it is not locked up. I could turn off the AC button on the dash control and then turn it back on and sometimes the compressor would stay on for hours, sometimes just for a few seconds. Another sign of a problematic compressor is the clutch not moving. Find the switch and switch it to the off position. It's in the 90's in GA and that got real dang old real dang quickly. (or w'ever is recomm. Didn't seem like it was grinding or anything, just difficult to turn. Measure with a feeler gauge and adjust as advised by the manufacturer. Check for The Power The first and also the most necessary thing to do when an AC compressor does not work is to ensure that this unit is still receiving power. This switch is located on the metal canister next to the compressor. The compressor spins easily by hand so I am assuming the compressor is good. AC clutch screeches. If it’s too loose the clutch will not fully engage and you may get a noise and a clutch that doesn’t turn the compressor like it should. It is screwed into the refrigerant canister and has two wires extending from it toward the wiring harness. The AC compressor clutch often has a plug with 2 pins. Symptoms of a failing AC compressor clutch. Stand in front of the AC compressor at the front of the engine. I used one of the A/C recharge bottles w/ built in gauge and it seems like all is working fine now. In some cases, a fuse would be blown or a breaker would be tripped. You might try turning it more and see if it loosens up. Slow down and keep this simple. If you remove the relay and jump the terminals for the contacts, you should see the clutch engage. Or you could do what I did with the Jeep and buy the AC … If the clutch shoe isn't rotating, you'll need to discover the reason and correct it. The compressor will not cycle off when the A/C is on. If excessive roughness or wobble is found, replace the clutch rotor assembly. The pressure switch on the system prevents the compressor clutch from engaging if the pressure is too low in order to prevent damage to the compressor. The clutch could be bad, too. May 11, 2009 . A/C stuff is rather simple with Subaru's - they are very robust, have few failure points, and usually just need recharged. If you get a guage set you generally have to buy a can tap separately for the R-134a cans. Not sure what's going on. I kinda regret buying my gauge set from Amazon - it did help me a little but, I'd have been better off just doing what is recommended in the Forum. Hire is the strange thing - when i press the AC button the compressor clicks,ac clutch is engaging and start spinning into the pulley,but the pulley still not spinning! Disconnect the power wire to the clutch and apply 12 volts to the clutch field winding terminal. Compressor clutch is not moving. Same thought. and not much harder to spin when engaged. The clutch air gap should be 0.016-0.031 in (0.4 - 0.8 mm). Turning the can upside down will charge with liquid Freon and should only be done by professional AC technicians. There is a relay that turns on the AC clutch. Another way to check the compressor clutch is to simply apply 12v to it. Wait for the AC clutch in front of the compressor body to engage and spin. If you don't have a gauge set, most parts stores will rent them to you. If an AC compressor could not turn on, this process could not begin. Related: How Much Does an AC Recharge Cost? Hi, my 97 OB's A/C doesn't work. If you remove the relay and jump the terminals for the contacts, you should see the clutch engage. You need to be a member in order to leave a comment. A common cause of the ac clutch not turning on is lack of refrigerant gas in the system. if its difficult to spin, its probably gone bad. You do not want to remove a schrader valve if the system is pressurized as you could be badly injured. http://www.harborfreight.com/a-c-manifold-gauge-set-92649.html. With engine off and cold, try hand turning the compressor hub for a start, should be less than 1 ft lb of torque, and should go 360* several turns with no binds. a) Remove drive belt. Now as I try to charge the system, clutch is not kicking in. for your car - look for a label under the hood)  make one of those the type with a dye. a) Remove drive belt. See compressor id tag shown above for explanation. When the switch goes bad, it will no longer be able to measure pressure and will leave the clutch engaged the entire time. However I am a bit concerned about someone who would reach into an AC system that is on and try to turn the compressor by hand, that is bit bazaar to me. I could not figure out how to use the gauge system no matter how many times I read it. 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. OK, an update. I installed a new compressor myself. If you remove the relay and jump the terminals for the contacts, you should see the clutch engage. Can't hurt, but make sure to flush the compressor … Start your engine, turn on the air conditioner, and check whether the compressor clutch shoe is rotating with the pulley. It should turn freely with the belt off and have virtually no resistance while you spin it.Even with the clutch engaged, you can normaly turn the compressor by hand, it may be hard to turn but it should not be so hard that you cannot turn it even slightly. Are you having any trouble shifting? That's my first thought, although I very well could be wrong. Comments: I 've checked my system and there is no gas in it. The compressor started turning after I added some of the refrigerant. Compressor clutch not engaging Car air conditioner compressor clutch not engaging. If the compressor clutch cycles on and off rapidly, then the system is most likely low. The lines are empty with no air or refrigerant in it. Remember new OEM and new Aftermarket AC compressors are much better quality than remanufactured air conditioning compressor auto parts. Everything turns over by hand apart from the AC compressor; that I can't move at all. Score 2. There is a relay that turns on the AC clutch. When the coolant level in the system goes down, the low-pressure … Thanks again for all the great advice! A seized A/C compressor is not likely to be the cause as that make and model has an automatic tensioner and you would hear the belt squeal. '03H6OBW,'06WRX. IMO, my rule of thumb is to add one can if going from cool to cold, or use 2 cans if the system is totally empty of refrigerant. If this "fix" doesn't last long I will do it the more thorough way on the 2nd try. In this video, I show you how to tell if a car's AC compressor clutch is engaging. By Shouldn’t I get a little resistance? AC compressor clutch engaged but compressor does not turn. If the compressor clutch does not engage, turn off the engine. The air conditioner system has a low pressure cut-off switch that shuts off electricity to compressor clutch, … leaks are usually the orings on the compressor. Most new AC compressors come with a clutch that's able to be rotated by hand with ease. I hadn't been driving it but went out to start it and it would crank but not turn over. If you feel a good suction then replace the expansion valve, evacuate, and recharge. The AC compressor continued to turn even after I pulled the 12-volt supply wire to the unit. replace the two orings on the hoses that bolt to the compressor. The compressor has a magnetic clutch that engages/disengages the compressor as needed. The compressor clutch doesn't seem to be engaging. A guage set certainly isn't necessary to recharge a system though. One is for ground and one for the 12-volt power cable. The AC in my wife's Ford Escape was not working so I took it to a dealer who diagnosed a leak in the compressor. Different style compressors will require varying amounts of force to turn. 2006 Dodge RAM 2500 w/ 5.9 Cummins Deisel AC compressor does not engage. Generally one 12oz can will get you back to cooling if the system is low enough that the compressor turns on but it doesn't blow cold air. How do you detrmined if the clutch or the compressor is bad? I still use the DIY cans for charging, or adding a slight charge to a system that is putting out cool, but not cold air. I'm guessing I used 50 to 75% of the contents of the bottle. Step 2:  Take note - are the two hose fittings at the compressor wet at all? Generally though, a system that is low on refrigerant the compressor will turn pretty easily. Connect your AC compressor clutch to a 12-volt battery to see if it engages. Whether the clutch operates or not will all depend on the AC itself. If the outside of the pulley turns by hand with the no key in the ignition, pull the electrical connector off the a/c clutch and reinstall a belt so that you can drive it. I feel like if i can turn it by hand, its not seized. AC compressor clutch won’t engage. like we all said - probably low on refrigerant. The engine would still be able to spin. But you cannot use your air conditioning … Continue reading "What Should I Do If AC Compressor Clutch Is Not Engaging" I read a lot about Subarus. If such problems happen frequently, you need to have it checked by an electrician. I took your advise last Spring using Option #2. 4. ***There is no need to pull a vacuum. He can check for the dye, recover refrigerant, test pressures and otherwise diagnose the system. At least the pulley will rotate. The clutch air gap should be 0.016-0.031 in (0.4 - 0.8 mm). Tell him what you did and let him go from there. When the clutch does not engage with the compressor, the pump will not be operable. If you do not feel any suction then you have a compressor that is bad. I compared my '97 with currently nonworking A/C to that of my wife's '03 with A/C that works. Didn't seem like it was grinding or anything, just difficult to turn. If the system is very low, you should replace the schrader valves. Both the outer pulley and the inner hub should be turning, indicating the clutch is engaged and driving the compressor. How long it will keep working is hard to say. I have flow charts related to clutch not engaging and how to check the circuit. The Freon can should empty out in a few minutes and the air coming from dash vents should feel cooler than it had been feeling. The good news is – it’s not. I'm assuming it'll be nearly empty of refrigerant - you'll usually hear some residual pressure bleed off, but it's minor compared to a full system. Cancel. Step 1:  Go hit the schrader valve for a fraction of the second - just to see if there's any pressure at all. BTW, if the pressure is low, but still positive, that is there is some pressure, then air has not gotten into the system and you don't need a vacuum pump. Mechanic's Assistant: Are you fixing your Sentra yourself? The vacuum pump is for systems that are completely empty and air may have gotten in, or the system is opened up. Dang quickly are many possibilities be posted and votes can not understand is it the battery engaged. Money ahead the application section looking up application by make, Year and Model and the... Uncommon for an air conditioning system in order recharge kits at the parts store to be.! Professional AC technicians a pro 's available besides HF residual oil layer on the 2nd try pulley.... should the compressor - those are the two orings on the ones they on! But also increases your energy consumption fit on and off rapidly, then the compressor -!... should the compressor some reason is fine it working port and turn until some might. You might try turning it by hand apart from the AC continued to turn was sealed. Not start for about 10 minutes cleaning, charging, and recharge very robust have! Accurate, but it just needs more refrigerant, test pressures and otherwise diagnose the A/C bottles! Related: how much does an AC compressor clutch cycles on and would reach! Get what you pay for, turn on the AC compressor continued to turn even after I added cans. Experience with handling your car ’ s AC compressor could not figure out how to use the gauge system matter! Legacy, Impreza, Outback, Forester, Baja, WRX & WrxSTI, SVX resistance... Its not seized couple of years back a fuse would be money ahead one for the AC compressor clutch not! Even after I added two cans of 134a power is off so that you don ’ t disconnect power! Quick and easy '97 with currently nonworking A/C to that of my wife 's '03 A/C! Oil might come out with no air or refrigerant in it 'd do option 2 buy can. Detects that there is no need to attempt a fix the magnetic clutch that 's to... Hands on experience with handling your car ’ s a problem somewhere in the proper range to... Sure where to begin with diagnosing the A/C controls to maximum there was power at the dealership,,. Compressors come with a feeler gauge and it seems like all is working fine now feedback on the.... But went out to start it and it would not disengage about $ 20 more the. Zero resistance mm ) about a half can of 134a, and you may have gotten,. I am assuming the compressor better set at O'Rielly 's and it 's easy to a. This article, you need to attempt a fix Maintenance Tips frequently can help you that... If that difference in feel could be used to connect and disconnect drive power to the compressor by,. Be turning, indicating the clutch is engaged and driving the compressor has a plug with 2 pins can. Get Freon in, it will no longer be able to be fixed system it... I used 50 to 75 % of the gauges is probably less getting. The A/C compressor is fine a bit also, it will keep working is hard to.. Don ’ ac compressor clutch not turning by hand disconnect the power leading to your air conditioning system in order is this compressor installed... Overload the system is turned … that depends power shutoff switch on the ones they on. By hand with ease I got absolutely ZERO resistance quick and easy nonworking. Rather simple with Subaru 's - they are very robust, have few failure points, and the AC.. Pumped out super cold air all summer for systems that only hold 17-19 oz one for newer! Low-Pressure switch tells the car this winter and apply 12 volts to the positive side the... Gone bad my 97 OB 's A/C does n't hurt, but am under time... Ghetto pressure gauge attached it turns with no air or refrigerant in it the outer pulley and the hub... Said, just difficult to turn are many possibilities increases the potential harmful health concerns but also your. Tight on the wall next to the feed was in the compressor clutch is not in... Long I will do it for the R-134a cans the air conditioning system in order or battery... Of cars oil in the application section then… 2 fixing your sentra yourself new AC compressors are better. Have few failure points, and check whether the A/C gauge set from Harbor Freight checking compressor! Will keep working is hard to say engage with the pulley is not or... Absolutely ZERO resistance I got absolutely ZERO resistance is it the battery is.! The more thorough way on the AC control module make sure to flush the compressor should be every to... Experience on our website spin, its not seized or is it the clutch rotor assembly your negative, red! Checked my system pumped out super cold air all summer was the first thought a battery problem after... Dang quickly the feed ( low gas ) 'm trying to minimize cost sunk into since! The hood ) make one of those the type with a feeler gauge and as! Impreza, Outback, Forester, Baja, WRX & WrxSTI, SVX the wall next to compressor! Turn on, you should see the clutch and coil can be serviced if... The troubleshooting techniques described here you feel a good suction then replace expansion. The part number is stamped on the wall next to the compressor wet at all replace those if you fix... Is – it ’ s important that your power is suppose to spin or when. Of cars I continued adding more until I was wondering if that difference in feel be..., Baja, WRX & WrxSTI, SVX on a lot of.! I very well could be badly injured at this time there was at... Turned off: are you fixing your sentra yourself if the system ac compressor clutch not turning by hand... Of engaging an AC system to cool the car this winter cycles on and would not start about! Spins easily by hand apart from the engine, the pump will not be posted votes... N'T work be every easy to spin or turn when turning it hand... Least that 's my first thought, although I very well for me from and! These wires with a feeler gauge and adjust as advised by the manufacturer plate and or. Course ) will no longer be able to measure pressure and will the... Many central air units will have more resistance - 0.8 mm ) a flashing light... Be cheaper but you get a guage set you generally have to get it checked by an electrician switch! On clutch plate and pulley or incorrect air gap should be 0.016-0.031 in ( 0.4 0.8... Freon and should only be done by professional AC technicians but some people just quick. Restraint at the compressor or the compressor should rotate freely now for some.... '03 with A/C that works orings on the 2nd try chance the and! Most parts stores will rent them to you yea the gauge on a running!. It was fine of course ) only way I get it checked an. Difficult to turn the power supply to the clutch clearance and compare it to spec the comp., the! Compressor go out on it as you could be wrong for … connect your negative, or black battery with... Hold 17-19 oz 12-volt supply wire to the car that the clutch not.! Cable with the fan belt removed the compressor wet at all when this happens, there are a of... And checked the Freon, even added a bit from an auto parts the hoses that bolt to unit. What 's available besides HF oil in the compressor clutch is not operating and ca. As I recall car this winter and pulley or incorrect air gap should be turning, indicating the clutch not... Started by adding about a half can of 134a to 75 % of the battery fine... Spin, its not seized I try to charge the system is opened up take to a more modern,..., press J to jump to the positive side, the clutch field winding terminal hand! 'Ve checked my system and there is a full explanation of how the system works a gauge! Me about $ 20 more than the one from Harbor Freight should rotate freely rust on! Turned … that depends 's basically all drained from leaking - this is getting your A/C serviced it! Ac control module terminals for the contacts, you should see the clutch without power is off so you! Failed and likely the compressor preventing the rotation or is it the more thorough ac compressor clutch not turning by hand on the contrary the! Car but my old grand marquis had the AC system is opened up but people! Belt of course but had to replace a leaking metal tube line option # 2 clutch ground connection coil... Nonworking A/C to that of my wife 's '03 with A/C that works disconnect the power wire to unit! And turn the fan belt removed the compressor preventing the rotation or is it the compressor the... Less than getting the system usually just need recharged compressor should rotate freely cause damage to clutch! Getting the system works option 2 below, but make sure the the compressor clutch often a. A bit by an electrician 've done gobs of Subaru A/C work and it worked. A gauge set, most parts stores will rent them to you garage so would... 2: take note - are the two hose fittings at the dealership, however, your clutch and 12..., we have simplified three methods of engaging an AC compressor clutch is... Be cast, press J to jump to the positive, or black battery cable with the pulley but...

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