Factory A/C System Woes

[MikeB]

Originally Posted by PbFut

At about 100 degrees outside temp, while stopped at a light, I notice a slight increase in cab temp. Once moving again the cabin temp quickly lowers.

I have a similar issue with the 27 year old Vintage Air R134a system in my truck. I haven't measured the air temp at the center vent recently, but I'd guess it rises from around 40 deg to 50 or more at a long stop light.

It's not a major deal, but I'd like to fix it. Sounds like even a small pusher fan in front of the tube & fin condenser would do it. Or maybe a more modern stacked plate condenser???

Just remembered that I also have a very small oil leak at the compressor. Not enough to drip or throw oil on the underside of the hood, but I can wipe oil off the bottom of the compressor and a mounting bracket. So, the problem could be I'm a tiny bit low on refrigerant. New Sanden compressors don't cost to much, so maybe I can kill two birds...