1992 CADILLAC BROUGHAM R-12 REFRIGERANT AC SYSTEM

  • Tiny
  • 2CarPros-Archives
  • 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.

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Wednesday, October 20th, 2010 AT 6:19 PM

1 Reply

  • Tiny
  • 2CarPros-Archives
  • Member

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.

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Wednesday, October 20th, 2010 AT 6:20 PM

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