Question about 1990 Chevrolet S 10 4WD

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Idle high to low

Changed plugs wires cap and rotor, ran fine then stalled. When started it idles high then low high then low, but if I unplug the electrical plug from alternator, it runs fine until bat dies. Checked alt and good, replaced tps and iac, so what could this be?

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  • Mike Butler
    Mike Butler May 11, 2010

    How was it running prior to work done? (plugs, wires etc.)

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Try cheking your timing

Posted on May 06, 2009

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