I have a 1996 Silverado. Replaced compressor, receiver/dryer, and condensor with autozone replacements. Flushed system. Replaced one of the lines. Seems to cool ok at interstate speed but at idle it does not. It has been in the 90's here but I feel it should cool better than this. I bought a HF scale and charged by weight. However, becasue it is hard to estimate how much is coming out of a can I think I have
2 extra ounces in it. Would that cause this problem? It cooled fine I think when I fixed the air but temps were not in the 90's. Could the fan clutch cause this and how do I tell if it is bad?I have not put guages on it yet. What shoudl the pressures be?
I appreciate any help!