Ok I have a 91 LO3 bird and I removed the computer and harness. The computer controls the compressor. My question is how do I get my A/C to work without the computer. The Wires for the compressor has one for ground and one that went to the ecm. The other just hooked the two plugs together. Has anyone tried to make the A/C work without the ECM. Will I have to go with a different compressor or will I have to install a switch to put power to the wire that normally went to the ecm when I want A/C?

 

https://www.thirdgen.org/techbb2/sho...computer+a%2Fc

 

Thanks for the reply but mine seems to be a bit different. I didnt hack away at my wiring harness I pulled it out and simply went from sensor to sensor weeding them out untill all the wires that went to the ecm was removed from the car. On the ac one of the wires goes to the ecm so it was removed with the ecms wiring harness to keep it complete for someone that may need it on here. Anyway i have a spare harness and im going to cut the wires for the two plugs on the A/C compressor. I do know that there are 2, 2 wire plugs. 1 wire goes to ground, 1 wire connects the two plugs together in series, and the last wires goes to the ecm.

 

The wire going to the ECM is more than likely just an 'a/c request' signal wire for telling the ECM the A/C is cycling (for idle speed purposes), it doesn't operate the the compressor clutch.
Here's a crude, crappy pic of what I'm talking about...

 

well thanks for your replys I have found the problem. What happend was there was one of those no insulated t's in the wiring for the light blue wire. one end went to the ecm the other to the compressor and the last to the a connector from the hvac controls. When I checked it all out I had see what a did. When i took the ecm's wiring harness out I cut that t out of there. So all I had to do was hook up the two light blues and im working again!!