Ok, so the wife wants the air conditioner in our 2000 Tj 6 cyl auto to blow cold. Currently its blowing warm air. So I bought a can of refrigerant and added a little to the system. No luck. It still blows warm. The compressor is working, cycling about every 25 to 30 seconds. Not sure if that is too often. Its holding pressure doesn't seem to have any leaks. Does anyone have any suggestions? Could it be a bad compressor or drier?