not getting power to ac compressor. 1988 GMC 3500
4 Answers
Auto_Centric answered 8 years ago
Pressure switch on the accumulator tank is probably keeping It shut down is the AC cold when jumped? Check R134a high and low side Psi readings
I did not leave it jumped at the low pressure switch very long, just long enough to see if compressor would kick on. How long can I keep it jumped at the switch? Thanks
I jumped the low pressure switch and added a can of R134, It is leaking ant connection going into firewall from accumulator tank. Will there be an o-ring and will I need to have a vacuum pulled in order to charge? Thank you
Auto_Centric answered 8 years ago
Pay $85-100 and have it evacuated, checked for leaks 30mm of vacuum ...and filled with the correct oil PAG,# and amount. Then filled to the correct weight ONLY proper way, of refrigerant 134A. That's what I suggest..