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1993 GMC Jimmy SLE 4.3L Poor Idle Quality, Stall
Posted to GM Driveability on 4/1/2002 23 Replies

No DTCs. Engine is overfueling and fuel trim is going back to 80. When the engine is about to stall the iac backs out and causes the surge. With and osiliscope I can see an extra spike on the fuel injector curuit. I had run two wires from my ecm to my fuel inj...

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car Vehicle Data

1993 GMC Jimmy SLE

VIN 1GKDT13W3P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CPI
EmissionsFederal
SymptomsPoor Idle Quality, Stall
OccursAlways, Idle
Message Closed w/FIX

car Vehicle Data

1993 GMC Jimmy SLE

VIN 1GKDT13W3P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CPI
EmissionsFederal
SymptomsPoor Idle Quality, Stall
OccursAlways, Idle