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1990 GMC Vandura 1500 Question: paparess5@aol.com

 

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, 5.7L V8, Dallas Center, IA, December 16, 2010, 23:46
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i have a gmc van 1989 it idles fast put in plug wires tps and map sencer and it steel idles around 2000 rpm

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  • Answer #1

    December 17, 2010, 10:56
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     Master

    Make sure there is no intake manifold leak or disconnected vacuum hose from the intake.

    Zee

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    , December 17, 2010, 11:33
     Rookie

    all vacum hose are in good shap coud not find any intake leaks

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