My car's AC blows hot air when I am stopped at a long traffic light, just idling, or driving very slowly...?
... such as when I'm circling around in a parking garage, but the AC works just fine when I am driving normally.
A friend said he thinks it's the compressor. Can anyone confirm that? If so, how much do you think it would be to fix? My car is a 1999 Saturn SL2.
Any recommendations? If I decide not to fix it, is the AC likely to stop working entirely?
Thanks for your help!