Mechanics

R-12 REFRIGERANT AC SYSTEM

1992 Cadillac Brougham • V8 2WD Automatic • 53,000 miles

1992 Cadillac Brougham 5.7 liter engine with a R-12 refrigerant ac system, 53,000 miles. The system is fully charged but at idle the compressor will disengage and not start again unless, A) I high rev the engine. B) Tap on the canister molded onto the high pressure hose where the connection for the manifold gauge hose would attach. Am I dealing with a contaminated system? Any advice appreciated.
Avatar
2CarPros-Archives
October 20, 2010.




Sounds like a pressure switch problem. Test for power in and out of the low pressure cycling switch. Sometimes they get weak and wont hold the comp on.

Tiny
2CarPros-Archives
Oct 20, 2010.


AD