ENGINE KNOCKS WHEN I SWITCH ON THE AIR CONDITIONING
2001 Oldsmobile Alero
November, 16, 2011 AT 4:24 AM
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?