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1993 GMC Sonoma Question: low idle,engine surge@cruze speed, engine dies@red lite or stop sign

 

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J-HOOK, 4.3L V6, Fairview, TN, April 19, 2011, 14:01
 Rookie

going down road @55,60 mph starts missing will not throttle unless u mash to floor takes out good when back to cruze speed no power again. will run great @ full throttle

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  • Answer #1

    Superbob April 20, 2011, 15:48
     Master

    I'd look for a problem with the EGR system, the airflow sensor (MAF), and the intake ducting for air leaks. There isn't much info in your question and I don't have much specific advice for you, I recommend you find a GM specialist to help you.
    If you want to find a specialist, here's a directory link for you:
    https://repairpal.com/directory?address=37062&car_bra...

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