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1994 GMC G2500 Vandura 5.7L Poor Idle Quality
Posted to GM Driveability on 3/21/2006 11 Replies

Thanks for your time. The van idles at about 1800 rpm. The scanner shows iac position at 150, as it wrms up it goes to about 99. I removed the iac valve and when I plug the hole with my finger, the idle drops to 700 rpm. The iac plunger is observed to move whe...

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Message Closed w/FIX

car Vehicle Data

1994 GMC G2500 Vandura

VIN 1GKEG25KOS
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / tbi
SymptomsPoor Idle Quality
OccursAlways
Message Closed w/FIX

car Vehicle Data

1994 GMC G2500 Vandura

VIN 1GKEG25KOS
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / tbi
SymptomsPoor Idle Quality
OccursAlways