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1989 Pontiac Firebird Trans Am 5.7L Hesitation, Stall
Posted to GM Driveability on 2/13/1998

After cold start vehicle runs good for about 1 min then goes lean.

Try to accel and you can feel the initial surge from the fuel pressure regulator and then car bogs or dies. Fuel pressure correct at idle and shows increase with accel.

DSO shows prpper oper...

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car Vehicle Data

1989 Pontiac Firebird Trans Am

VIN 1G2FW2181K
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / Tuned port Injection
EmissionsUS
SymptomsHesitation, Stall
OccursCold, on Initial Accel;like Power Valve in Carb.
Misc.Tuned Plort Injection
Message Closed

car Vehicle Data

1989 Pontiac Firebird Trans Am

VIN 1G2FW2181K
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / Tuned port Injection
EmissionsUS
SymptomsHesitation, Stall
OccursCold, on Initial Accel;like Power Valve in Carb.
Misc.Tuned Plort Injection