My 2002 chevy tahoe

Asked by GuruL74Q6 Apr 30, 2019 at 08:31 PM about the 2002 Chevrolet Tahoe 4WD

Question type: Maintenance & Repair

My truck wont go past 20 mph and the rpm stays at the 2

2 Answers

27,720

The basics for problems at higher rpms, check for blockage of some kind. The first two things I think of are fuel and exhaust. Is your transmission ok? Now, with high idle, I block off mouth of throttle body, it should kill the engine, if very little or no effect, you got false air getting in there from somewhere? How long since tune-up? Any applicable trouble codes? I don't know what testing you have done?

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