92 4WD

1992 GMC Truck

Tiny

charlie1960

June, 5, 2011 AT 4:57 PM

I have a 1992 gmc 4wd with a 5.0 eng my problem is hard to start and it surges high an low when idling an when going down the road. I changed the throttle position sensor with no change any idear what it could be

FOUND 11881 RELATED QUESTIONS

4 Wheel Drive

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1 Answer

Tiny

rasmataz

June, 5, 2011 AT 5:03 PM

Check the fuel pressure with a gauge if its within specs-could be low, also clean out the idle air control valve and test the coolant temperature sensor-

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