Accelerating / Tachometer Drops

2001 CHEVROLET MONTE CARLO
126,000 MILES • 6 CYL • AUTOMATIC
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MONKEYBOY666
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Have a 2001 Chevy Monte Carlo. AFTER driving for 5 minutes, when Accelerating, teh Tachometer Drops in RPM. Car still runs, no warning messages, etc. Just want to know what to replace and/or look at. Have been told stuck throttle body (that didn't fix it), throttle position sensor, spark plugs, etc? Any help is appreciated
Apr 6, 2011 at 12:58 PM
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WRENCHTECH
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You can't just throw parts at it. You have to do some testing and diagnosis to try to isolate the cause. I would take a pressure test on the exhaust system looking for a restricted Catalytic Converter.
Apr 6, 2011 at 1:44 PM