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1991 GMC Sonoma SLE 4.3L Poor Idle Quality, Surge, Stall, STALL
Posted to GM Driveability on 6/20/2008 5 Replies

i have this sonoma that will hunt for idle originally was getting code 12 all the time put in new ecm and cured that problem but still willl stall seems to idle fine or a little high all the time if you hook up the brick idle will ramp up to 1000 rpm and gradu...

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car Vehicle Data

1991 GMC Sonoma SLE

VIN 1GTCS14Z4M
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsFED
SymptomsPoor Idle Quality, Surge, Stall, Stall
OccursIdle
Message Closed

car Vehicle Data

1991 GMC Sonoma SLE

VIN 1GTCS14Z4M
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsFED
SymptomsPoor Idle Quality, Surge, Stall, Stall
OccursIdle