1998 Durango 5.2 V8 - Installed a new compressor last week. After charging the system with refrigerant, the system worked great for about four days. Then it started blowing warm air again. I checked the refrigerant level and it was low, so I added some UV and check for leaks. I didn't find any so I added some more refrigerant and all of a sudden something started blowing out the back of the compressor. I am assuming it was refrigerant because it had the UV coming out with it. The blowing eventually stopped and then the refrigerant level was low again. Whats going on? Is there a blockage somewhere?

 

your compressor has to be running when you take a pressure reading or recharge the system. or you could have a bad pressure switch.

 

Did you change the orings as well?