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The engine was replaced 20,000 miles ago. All new rubber hoses and vacuum connections. There is no sign of a vacuum leak. I had periods in the past of vacuum leaks. I know the signs.
I went and bought a new fan clutch today. The old one has been on there a long time. I will see if it helps. If I hear it lock up more I will know the old one was work out than I thought.
I think the low pressure switch turns the compressor off at 35 PSI but it might be 30. It sure works now.
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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