Is there an AC Compressor relay or some way to test power? I was looking through my manual an couldn't find anything on it. The fuse it good and it's not low on refrigerant.

 

It varies from year to year, and engine to engine. Some are powered directly from the dash switch. While others are ECM controlled and use a relay.

RBob.

 

Sorry 91' Camaro Z28 if that helps.

 

Here it is:


The A/C control switch is on the dash heater controls. The pressure cycling switch is on the accumulator.

RBob.

 

Since you provided such a nice diagram and mentioned the pressure cycling switch being on the accumulator I went out to the car to check the plug. With the car running and the AC on I unplugged the connector, as I plugged it back in I leaned on it a little and the compressor kicked on. I then bent the connector back and forth and the AC compressor would kick on and off, but if I let go it would kick off. I tapped the pressure switch with a wrench and noticed the AC compressor would kick on, but each time it cycled off I had to tap the switch to get it to kick back on, I think it's safe to say I have bad pressure switch. Thanks so much for pointing me in the right direction.