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Paparess5@aol.com

(1990 GMC Vandura 1500)
in Dallas Center, IA on December 16, 2010
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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Popular Answer
on December 17, 2010
Make sure there is no intake manifold leak or disconnected vacuum hose from the intake.

Zee
on December 17, 2010
all vacum hose are in good shap coud not find any intake leaks
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