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International Automotive Technicians Network
1998 Chevrolet Express 3500 5.7L Poor Idle Quality, Hesitation, Surge, Misfire
Posted to GM Driveability on 6/16/2004 7 Replies

Hey fello techs, this vehicle will suddenly lose power, but usually not stall. No back fire. No codes. Fuel pressure is fine when having an "event". Cylinders 3 & 7 show a misfire, but then both clear up and will run fine. Just tuned up with filters & all igni...

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car Vehicle Data

1998 Chevrolet Express 3500

VIN 1GBHG31C4W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Surge, Misfire
OccursIntermittently
Misc.Mini School Bus
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Express 3500

VIN 1GBHG31C4W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Surge, Misfire
OccursIntermittently
Misc.Mini School Bus