Mechanics

WHEN I TURN ON THE AC COMPRESSOR, MY ENGINE PULLS AND MAKES A KNOCKING, SQUEALING NOISE. THE AC GETS COLD AND THE HEATER HEATS.

2001 Oldsmobile Alero • 133,000 miles

When I turn on the ac compressor my engine pulls and makes a knocking and a high pitched noise. The cooling and heat work fine but when on, it takes the power from the engine. Higher rpms and has a more difficult time picking up speed. I can hear the engine pull. If I turn off the ac the car runs fine. Is it the compressor or the engine or even vacuum leaks?
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Leoluvsit
November 16, 2011.



Compressor has failed. Leave it off till you have it repaired.

Roy

ASEMaster6371
Nov 16, 2011.