Older buick a/c problem

[Jimstransam]

I have a 1990 buick skylark 2.5 liter. The a/c was working till i removed and refilled the freon. I've also noticed some changes in my engines idleing, and the idle does not change when I put on the a/c. I bypassed the electric to the compressor and it ran but nothing got cold and the idle never increased. I replaced some relays but that didn't help. The freon pressure is fine. So far i've read it could be a dirty idle air control valve and I'm heading to the garage to try to clean it, any other thoughts would be appreciated. JC

 

[WristPin]

the compressor wont kick on if the pressure is too low, or there is not enuff freon in there. there is a plaque that outlines the amount of charge needed for proper operation.

 

[Jimstransam]

I thought i covered that in my post the freon pressure is fine.

 

[WristPin]

just makin sure its done right like I said, it wont kick on if its too low. Did you draw a vacuum on it before you charged it?

 

[Jimstransam]

no, just used one of those change over freon kits.