Air Conditioner problem
Hi everyone, hope someone can help me out here because I'm sweating my _____ off. My car air conditioner only seems to work when the car is in motion. If I'm stopped, it blows hot air. Now I just tried to refill the low port AC compressor with one of those AC Boosters from the auto part store but it seems as if it's already filled with coolant. I had 2 AC boosters, the one with the guage was pointing in the red zone and didn't seem to release any coolant. The other AC booster without the guage spit back coolant when I pressed the button so that's why I think the low port ac compressor is already filled. My car is a 1997 Mitsubishi Diamante LS. My AC works pretty good when i'm moving above 30 mph so this is strange. Any ideas out there?