paparess5@aol.com on 1990 GMC Vandura 1500

i have a gmc van 1989 it idles fast put in plug wires tps and map sencer and it steel idles around 2000 rpm

Asked by for the 1990 GMC Vandura 1500
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Make sure there is no intake manifold leak or disconnected vacuum hose from the intake.

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