Engine races

Asked by May 28, 2017 at 01:08 PM about the 1998 Pontiac Trans Sport

Question type: Maintenance & Repair

3 Answers

855

When? at idle or all the time? Either way check all your engine vacuum hoses for leaks, disconnections, or cracks. Good Luck!

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All the time I can drive around without using the gas petal

855

Other ideas if this does not pan out is the throttle position sensor or if applicable ruptured EGR diaphragm. If you have a Mity-Vac hand pump you can test to see if EGR holds vacuum. See if there are any stored or pending codes. That's all I have on this one for now.

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