A/C woes on '89 more info added

[wellsguy77]

I am not getting any warnings or service trouble codes related to the A/C. As a matter of fact the A/C was working just fine when I went to work in the morn, but when I went out for lunch in about 95 degree weather and turned the A/C on air came out but the compressor did not engage. It sounds like it wants to spin but it is not. I hope with this extra information I can get some more replies or suggestions for this. The compressor will not engage when I turn my A/C on, I have disconnected and reconnected the neg battery terminal, but that didn't work, and the CRT screen is not saying I am low on freon, so does anybody know of something else it may be, before I tell my mechanic I need a new compressor. Plus I read about an alternate use for R12, I think it's called Freeze 12, how would I find out if that is ava in my area?

[Barney Eaton]

I had a similar situation and in my case it was the ECM not giving the system ground.

Go to www.reatta.net and look at the 1990 service manual. There is a step by step check. You verify that the relay is working, etc and the last possible problem was the ECM for me.

[wellsguy77]

I have a service manual for the car would the directions be in there too, or just the 90 manual? What section do I look under is it the A/C section or electrical?