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2001 GMC Safari SL 4.3L Surge, Misfire
Posted to GM Driveability on 1/10/2014 23 Replies

Surging under load about 4k rpm before it shifts into next gear. As it surges it flags muiltable cylinder misfires, but doesnt feel like a misfire, more like a fuel or air surge issue. Fuel pressure holds steady at 61 psi while it surges. Map sensor hold at 3....

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car Vehicle Data

2001 GMC Safari SL

VIN 1GTDL19W21
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsSurge, Misfire
OccursUnder Load, on Accel
Message Closed w/FIX

car Vehicle Data

2001 GMC Safari SL

VIN 1GTDL19W21
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsSurge, Misfire
OccursUnder Load, on Accel