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Accelerating / Tachometer Drops

Tiny
MONKEYBOY666
  • MEMBER
  • 2001 CHEVROLET MONTE CARLO
  • 6 CYL
  • AUTOMATIC
  • 126,000 MILES
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
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Wednesday, April 6th, 2011 AT 12:58 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
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.
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Wednesday, April 6th, 2011 AT 1:44 PM

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