A/C - Please help
Thread Starter
Melting Slicks
Joined: Nov 2008
Posts: 2,938
Likes: 65
From: Rochester Hills MI
A/C - Please help
i checked all my fuses and the wires that go to the compressor, and they all appear to be ok. My AC light stays on when i press it. It doesnt flash or anything. However, the clutch never engages. Do the AC relays go bad often? How do i check to see if the relay is working or not?
Burning Brakes
Joined: Dec 2003
Posts: 1,066
Likes: 9
From: Eddy Texas
Easy way to trouble shoot the relay is to swap it with one that works. Look in the elect panel under the hood, see which is labeled A/C( I think it may be #34) and swap it with the one labelled horn. If the A/C works and the horn doesn't, you have a bad relay.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 77
From: Forney Texas
Check the wires going to the compressor. My plug broke somehow and that was my issue. I jacked up the car and looked through the wheel well. You can check for voltage at the pressure switch with the A/C on too.
Thread Starter
Melting Slicks
Joined: Nov 2008
Posts: 2,938
Likes: 65
From: Rochester Hills MI
i checked the plug going to the compressor (the one you can see from above the engine), and it seems to be fine. i also switched the relay with the horn, and still nothing. any more ideas? (i dont have a voltmeter btw :P)
Tech Contributor
Joined: Jan 2007
Posts: 19,246
Likes: 1,092
From: Dyer, IN
Ok, so how do you want to proceed? You will need a DMM to verify 12 volts and ground at the compressor connector at the very least. If you have 12 volts, and a good ground, then the clutch is probably toast(another thing you can check with a DMM).
