AC not working
Thread Starter
Melting Slicks
Joined: Jul 2006
Posts: 2,151
Likes: 0
From: Strongsville Ohio
AC not working
Still trying to figure out whats going on..
94 vette AC button not flashing, I get no cool air, compressor not spinning. I jumped the low pressure switch connector and I got no compressor engaging either
I check the pressure with the compressor not spinning and I am at 90 +- psi...
What should I check next?
94 vette AC button not flashing, I get no cool air, compressor not spinning. I jumped the low pressure switch connector and I got no compressor engaging either
I check the pressure with the compressor not spinning and I am at 90 +- psi...
What should I check next?
Last edited by derekguzz; Mar 19, 2012 at 07:19 PM.
Burning Brakes
Joined: Apr 2009
Posts: 877
Likes: 0
From: Broken Arrow Oklahoma
first check and see if it has any codes such as low freon. If not, then refer to the service manual for diagnosis. If you don't have the manual it will be a crap shoot trying to isolate the problem.
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
If you turn on the system, no lights flash on it, correct?
Hit the defrost button, A/C should kick in, fans on.
Like I said, start with fuses, then check connector at A/C clutch for power/ground. Should be a two pin connector.
Also, check for power at the Pressure cycling switch-low pressure.
ECM controls A/C Clutch Relay, you could try jumping pins 87/30 of it and it should run with fuse ok, and key on.
I'm basing this on 93 stuff, but 94 should (is) similar.
Hit the defrost button, A/C should kick in, fans on.
Like I said, start with fuses, then check connector at A/C clutch for power/ground. Should be a two pin connector.
Also, check for power at the Pressure cycling switch-low pressure.
ECM controls A/C Clutch Relay, you could try jumping pins 87/30 of it and it should run with fuse ok, and key on.
I'm basing this on 93 stuff, but 94 should (is) similar.
