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1996 GMC G3500 Vandura 5.7L Misfire
Posted to GM Driveability on 5/10/2010 12 Replies

At part throttle (light cruise) around 20 MPH or so there is a misfire and slight popping in the exhaust. If you give more throttle the problem goes away immediately and the engine has lots of power. Idle is also perfect.

Please note this is a TBI engine as u...

12 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1996 GMC G3500 Vandura

VIN 1GTGG35K6T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / TBI
EmissionsNot OBD-II Compliant
SymptomsMisfire
OccursCruise, When Hot.
Message Closed w/FIX

car Vehicle Data

1996 GMC G3500 Vandura

VIN 1GTGG35K6T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / TBI
EmissionsNot OBD-II Compliant
SymptomsMisfire
OccursCruise, When Hot.