Years ago... GM used to have what they called a thermal switch clipped
right onto the compressor bracket. Maybe someone knows if that still
exists... because it caused the problem you describe.

Professor
www.telstar-electronics.com

89 buick lasabre a/c
 

needing help with my 89 buick lasabre a/c. The compressor is not engaging,
no cold air, blower works.

I checked 25amp fuse and it is ok, I bought a refill kit and pressure reads
good. Also, this isn't the original compressor, I had it replace about 5
years ago.

Is there a relay or something else I can check? I there is a relay, where is
it, what does it look like. Is there anything else that can be easily
checked?

Everything seems to work except compressor doesn't engage. So I assume it is
electrical.

Thanks! Piedmont

"Piedmont" > wrote in message
...
> needing help with my 89 buick lasabre a/c. The compressor is not engaging,
> no cold air, blower works.
>
> I checked 25amp fuse and it is ok, I bought a refill kit and pressure
reads
> good. Also, this isn't the original compressor, I had it replace about 5
> years ago.
>
> Is there a relay or something else I can check? I there is a relay, where
is
> it, what does it look like. Is there anything else that can be easily
> checked?
>
> Everything seems to work except compressor doesn't engage. So I assume it
is
> electrical.
>
> Thanks! Piedmont
>
>
Forgot to give credit: via Mitchell, sorry. s

"Piedmont" > wrote in message
...
> needing help with my 89 buick lasabre a/c. The compressor is not engaging,
> no cold air, blower works.
>
> I checked 25amp fuse and it is ok, I bought a refill kit and pressure
reads
> good. Also, this isn't the original compressor, I had it replace about 5
> years ago.
>
> Is there a relay or something else I can check? I there is a relay, where
is
> it, what does it look like. Is there anything else that can be easily
> checked?
>
> Everything seems to work except compressor doesn't engage. So I assume it
is
> electrical.
>
> Thanks! Piedmont
>
>
Sorry, forgot to credit above source: Mitchell. s