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1996 Chevrolet S10 Question: engine missing at low idle and take off.

 

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Visitor, 4.3L V6, Nacogdoches, TX, March 19, 2011, 15:35

Diagnosis says fuel tank pressure sensor, purge valve solenoid, mass air flow, loose vacuum could be the problem. I have changed and checked all of these plus two other sensors and no change in the problem. Please help me! What else could it be?

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  • Answer #1

    raiderron March 19, 2011, 15:45
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     Master

    I have seen where cleaning a dirty throttle bore has fixed this. The coking buildup causes turbulence to the air flow and causes stunble when accel and slight rough idle.

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