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1993 Chevrolet S10 Question: what will cause an eratic idle and throw a light

 

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Visitor, 2.5L 4 Cylinder, Emery, SD, March 21, 2011, 22:35

have replaced the cap rotor plugs wires and egr

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  • Answer #1

    March 21, 2011, 23:36
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     Master

    Would help if you supplied the code attached to the light. Have a parts store attach scanner and hit us back with code.

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  • Answer #2

    March 07, 2013, 15:53
     Rookie

    More than likly you have a vacuum leak. The way to locate where would be to get a can of carbuerator cleaner and with the engine running spray around the throttle body and vacuum line and listen for a change in idle.

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