Question about 1991 Pontiac Firebird
When traveling and constant highway speeds, the check engine light comes on and stays on until slowing to lower speeds or stopping and restarting the car.
Also could be something like a aftermarket exhaust, I put a cherry bomb on my 89 and the check engine light always turns on after about 3 miles of driving im told its not enough backpressure in the exhaust but it doesnt harm anything
Posted on Nov 24, 2008
Valve body issue with trans
Posted on Nov 12, 2008
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Posted on Jan 02, 2017
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