The throttle position sensor tells the ECU how much you've got the throttle
open or how much you're stepping on the gas pedal. Total failure of the
TPS will cause the ECU to fall into a fail-safe mode - the car will run very
rich. The car will actually run pretty well with a failed TPS.
Make sure the TPS is within spec and adjusted. A bad TPS (too much
resistance at full open) can cause high RPM (> 4kRPM) hesitations!
Click here to go to the TPS adjustment HOW-TO page!
Once we've confirmed that the TPS is good, an adjustment will take care of any
possible problems the TPS can cause.
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