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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
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