2001 buick lesabre when I stop or put the car in park the rpms go up

Asked by Shann26 Oct 08, 2016 at 06:42 PM about the 2001 Buick LeSabre Limited Sedan FWD

Question type: Maintenance & Repair

2 Answers

20

Cleaned the throttle body, installed new ISC, throttle plate moves freely, new flywheel and throttle sensors, checked for vacuum leaks by squirting brake cleaner on TB while engine running. Still over-revs to at least 2000 rpm's when it should be idling. Codes showed sensors.

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