not getting power to ac compressor. 1988 GMC 3500
clutch will engage when jumped, 2 prong plug that connects to compressor has no power. Any ideas? Thanks
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
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..
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