AC Compressor not working

Tiny
FREAKNPR
  • MEMBER
  • 2002 CHEVROLET CAVALIER
  • 17,800 MILES
AC Question: I have a 2002 cavalier 2.2l sedan that I have done just about everything to get the AC compressor to run. Back in August 2011 I replaced the compressor, accumulator, orifice and flushed out the entire system. I charged it and was working great! No leaks and was ice cold. This past week I tried it and was not working. The compressor would not kick in. I thought maybe it was low on gas and took it to be charged. The tech said the compressor wont run. I took it back home and checked the following:
1. Interior / exterior fuses
2. Relay
3. Checked all plugs to make sure they are connected.
4. Replaced the cycling switch(ac pressure switch)
5. Autozone hooked me up and exchanged the compressor for me to see if it would make a difference.
6. I also changed the ac heater control switch in the car.

I evacuated the system and then forced charged it by jumping the relay. Compressor still not working. I was able to jump the compressor. That worked and I was able to charge. I dont know what else it could be. Can it be the PCM?
Do you
have the same problem?
Yes
No
Sunday, June 3rd, 2012 AT 1:25 AM

3 Replies

Tiny
CJ MEDEVAC
  • EXPERT
It sounds like you are losing power somewhere let use a test light and start from the compressor clutch and goes backwards looking for power. Here is a guide the AC compressor wiring diagrams to help you get started.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please let us know what happens.
Was this
answer
helpful?
Yes
No
+1
Sunday, June 3rd, 2012 AT 4:41 AM
Tiny
FREAKNPR
  • MEMBER
Thanks for the diagrams I found the connection at the compressor had power so the clutch coil has shorted out, I guess I need to replace it :( damn the cheap compressors!
Was this
answer
helpful?
Yes
No
Sunday, June 3rd, 2012 AT 11:53 AM
Tiny
CJ MEDEVAC
  • EXPERT
Yep take the fun out of it. Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help

Cheers
Was this
answer
helpful?
Yes
No
Sunday, June 3rd, 2012 AT 10:13 PM

Please login or register to post a reply.

Recommended Guides