I posted the question here because I wasn't allowed to start a new topic.
I recently bought a nice 1988 Olds Delta 88 with 66,000 miles on it. The A/C blows warm air and the compressor continually starts then stops. I tried to add freon with no success. I would like to verify which is the low port.
I used the port in picture #1. Since it wouldn't take I thought maybe it was the port in picture #2 which is closer to the compressor, but I don't have a fitting for it..
File comment: Freon low side port picture.
Freon low side port.jpg [ 163.55 KiB | Viewed 997 times ]
File comment: Freon high side port fitting.
Freon high side port.jpg [ 139.47 KiB | Viewed 997 times ]