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Car ac compressor clutch will not disengage - S 10 Chevrolet Cars & Trucks

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  • Contributor
  • 45 Answers

If it disengages when you remove the plug at the compressor then the electronic switch/control is stuck in defrost or a/c.

Posted on Oct 16, 2013

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Posted on Jan 02, 2017

redbeard00
  • 957 Answers

SOURCE: AC clutch goes on and off

This is usually low refrigerant, but yes, it could be a relay, low or high pressure switch.

Posted on Apr 26, 2009

  • 57 Answers

SOURCE: A/C compressor/pulley clutch does not disengage.

It may be a bad low pressure cut out switch. You would have to hook the system to a set of gauges and look at the pressures. The low side should cut out at aprox.20 psi. if the switch is bad the compressor will keep running and ice up. The switch is easy to replace. It screws into the dryer (big silver can} it has two wires going to it. It's a cheep fix to try at home.

Posted on May 20, 2009

emissionwiz
  • 75814 Answers

SOURCE: AC clutch engages and disengages constantly

the system is low on charge, as far as the attempt to add refrigerant u did something wrong, no sure what, the rapid cycling of the compressor is only caused by a low charge 99% of the time. Have u hooked up a set of gauges to check pressures?

Posted on May 20, 2009

philschneide
  • 448 Answers

SOURCE: ac compressor clutch relay 1991 honda accord

Difficult to describe, but I will give it a try.
Inside the driver's side fender, close to the front of the car, there is a bracket that is held in place by one bolt, but which has a short horizontal bar as part of it which has two large clips encircling two cylinderical devices which have wires clipped into them at the bottoms. The one closest to the front (radiator) is the compressor clutch relay. The other one is the condenser fan relay.
Hope this helps you find it.

Posted on Oct 20, 2009

honeymokey
  • 3113 Answers

SOURCE: ac clutch-1988 buick regal

It's low on freon

Posted on Apr 09, 2010

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2 Answers

Air conditioner blows hot but freon is full


Your compressor could be faulty. Check to see if it engages when you press the AC button with the car running.

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I have a nissan sentra 1996. As per checking the ac compressor has stacked up, is there a connection between the ac and the engine because the car engine stops when i started it, there is a slight...


There is a clutch between the compressor and the engine that turns the compressor over. Although unlikely, if the compressor has completely seized then when the compressor clutch engages it will stall your engine.

Your car should have an aircon on/off button. Turn your car on and immediately switch off the aircon, if the compressor clutch is at fault it should stay disengaged and you should be able to use the engine.

Nov 04, 2013 | Cars & Trucks

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Can i disengage the ac compressor on my pontiac monatna


you can disengage it by not turning the AC on in the vehicle. the AC is engage by the clutch once you turn the AC on in the vehicle. as far as removing the belt from the AC, you can only do that if there is only one belt going to the AC. If you have 1 continous serpentine belt, then no. unless you go to an auto parts store and get a new serpentine belt, but tell them there is no AC on the vehicle.

Nov 24, 2012 | 2000 Pontiac Montana

1 Answer

Why does the compressor for the ac on my 2003 ford focus keep clicking ?


I assume it's because your clutch is engaging and disengaging. Could be from a loose electrical plug to your compressor coil on the compressor. It could be a loose plug to the pressure sensor or a bad pressure sensor because that sensor will shut it off if the car is low on Freon causing low pressure in the system. Could be low on Freon so it's on the edge of having enough pressure to turn it on and then shuts it down again because it dips below the pressure threshold when the compressor kicks in. Could be a bad compressor coil that engages the clutch. Maybe a loose connector to the AC Button in the car or the AC Button is intermittent. Could be an intermittent relay engaging the compressor clutch. That's a good list of what all could cause it and if you end up needing to replace the compressor, I made a video on how I did it.

Jul 07, 2012 | 2003 Ford Focus

1 Answer

My a/c compressor is only blowing hot air when I turn it on. I know a little about cars so I know it's the a/c but I am not able to find one on any site that may sell used or new.


If all you get is hot air there are several possibilities. The compressor is driven by the serpentine belt and is engaged and disengaged by an electric clutch mounted on the compressor drive pulley. With the engine running, have an assistant turn on the AC while you observe the AC compressor clutch. If the clutch engages, you can be reasonably sure that the system has freon, and the electric circuit is OK. If the clutch doesn't engage, which is the most likely situation, either you are low on freon, the AC clutch relay is inop, or AC compressor fuse is open (blown). A search of Google images will give you the location of the AC relay. You can pull out the relay, carefully remove the cover, reinsert the relay, and engage the compressor clutch by manually closing the relay contacts. Warning: do this only for a second or two in order to see the clutch engage. If the clutch does engage, then you are probably low on freon. There is a safety switch that prevents the clutch from operating if there is not enough freon in the system. Hopefully, this is the case. Go to Walmart and get two cans of r-134 and the inexpensive kit, and following their instructions, charge your system. If this is not the problem, you'll need a set of AC gauges and the skill to use them. Hope this helps. Dano

Aug 31, 2011 | 1998 Lexus Gs 400

1 Answer

Looks like a faceplate or some sort of front cover on the ac compressor looks like it broke free. Possibly bolts snapped off?


The ac compressor has a clutch on the front end where the belt pulley runs. When the ac is off the clutch disengages and the compressor stops running. The pulley will continue to turn with the engine. If the belt is running normally and that pulley is turning normally along with the other accessories on the belt, it may not be broken, just that the clutch is disengaged. If it is still in place and spinning then your clutch is probably not broken, but more likely you are low on freon. When the freon is low a switch tells the compressor not to come on, and only the pulley will turn. Your ac will not get cold. There may also be other reasons the clutch won't pull in, such as fuses and such.

Sep 22, 2010 | 1993 Buick Regal

1 Answer

After i put the ac on my bmw x5 2003 get over heat and smell burn


pls. check your ac compressor magnetic clutch attached in front of ur compressor if its working/ ac clutch engage when u turn the ac switch on and disengage when u turn the ac switch off/ it normally makes a clacking sound when it engage with the rotation of ur compressor/ if its not engaging it means ur magnetic clutch is stuck up giving excessive load to ur engine thats why it overheats/ it smell burnt because its magnetic coil is fried/ or check cooling system of ur car might be that coolant is empty/ fan is not working/ radiator is clogged or thermostatic valve is stuck blocking coolant flow....

Apr 09, 2010 | 2003 BMW 5 Series

2 Answers

2002 mitsubishi lancer ac does not blow cold and will continue to


Sounds like either the a/c relay is bad or a/c compressor clutch is not disengaging. Look on the compressor for an electrical connector, and if you can, unplug it. That should stop the battery drain. I would suggest taking the car into a good a/c shop to have the compressor looked at. The clutch can be replaced without having to buy a new compressor.

Aug 15, 2009 | 2002 Mitsubishi Lancer

1 Answer

AC clutch engages and disengages constantly


the system is low on charge, as far as the attempt to add refrigerant u did something wrong, no sure what, the rapid cycling of the compressor is only caused by a low charge 99% of the time. Have u hooked up a set of gauges to check pressures?

May 20, 2009 | 1998 Ford Explorer

1 Answer

Screeching noise, then a/c stops blowing cold air. Still blows air, just not cold air.


it could be the air conditioning clutch going out. to check turn your car on and idle it with ac on and hood open. at the ac compressor it will have a pulley on it with a clutch that engages when the air conditioning is on. if it engages and disengages it can be the clutch itself has gone bad, the ac clutch will also disengage if there is not enough freon in the ac system, will also engage and disengage if the pressure gets too high in the ac system. Depending on the year of the vehicle it will disengage at full throttle and come back on when you are not at full throttle.
If it is a metallic sounding screech for example take a coke can and drag it across pavement kind of sound it could be a bad compressor or a bad ac clutch. If it is a more rubbery sound for example a car spinning its tires kind of noise it could be a loose belt.

1. Check to make sure all belts are tight under hood
2. start car and look at ac compressor to make sure compressor pulley is turning and that the fan clutch is engaged spinning


Aug 09, 2008 | Mercedes-Benz 400-Class Cars & Trucks

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