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1991 Pontiac Firebird Trans Am 5.7L Excessive Emissions, Poor Idle Quality, Misfire
Posted to GM Driveability on 11/9/2005 12 Replies

Thanks for your time-

This car is a real head scratcher. It idles poorly with a wandering misfire, it does it right from start up to fully warmed up. It seems to run great under load, but if you hold rpm up in neutral it seems to misfire like at idle. While i...

12 Replies Received (View Replies)

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car Vehicle Data

1991 Pontiac Firebird Trans Am

VIN 1G2FW2387M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / tpi
SymptomsExcessive Emissions, Poor Idle Quality, Misfire
OccursAlways, Idle
Misc.Gta
Message Closed

car Vehicle Data

1991 Pontiac Firebird Trans Am

VIN 1G2FW2387M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / tpi
SymptomsExcessive Emissions, Poor Idle Quality, Misfire
OccursAlways, Idle
Misc.Gta