Pontiac Firebird 1967-2002 Birds of a feather flock together

Engine surging at cruise

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Old 07-21-2014, 12:26 AM
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Default Engine surging at cruise

Around 1400-18-- rpm engine surges about 100-200 rpm with steady throttle, slight increase of throttle stops surge until rpm level back off. Idle is smooth.

2001 Firebird, 3.8L Series III, 180,000 miles.

Only error code is P0449 evap solenoid.
Old 07-26-2014, 03:32 PM
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Sounds like the TPS.



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