Question about Pontiac Firebird
OK the TPS would cause a stumble but not a condition like u have, a MAF however would cause this and leave no fault codes, also a faulty fuel pump will cause this, the pump delivers enough pressure to keep the car running at idle/low RPM, but if u ask for more power it will fall flat on its face, so idle only is the symptom, u need to do the following, get the fuel pressure checked under a load, the pressure should be at least 50 pounds and increase when u goose the throttle, if the fuel pressure is ok then it is possible the MAF is the problem, but without the proper system scanner to watch the electronic signal from the MAF that is a guess, I do know that the MAF is a common problem on this year and very likely the problem, Also you have not done a fault code test, that needs to be done before you replace any parts, below is how u do a fault code test without a scanner.
Posted on May 04, 2010
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Posted on Jan 02, 2017
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