engine revving

Asked by GuruLBDF5 Apr 03, 2019 at 02:48 PM about the 2008 Jeep Liberty Limited 4WD

Question type: Maintenance & Repair

engine revs when foot is off the accelerator pedal between shifts

1 Answer
103,215

KenF answered 5 years ago

You probably have a vacuum leak affecting idle, check the PCV hose and elbow, or use a little starting fluid spray in very light spurts around throttle body, and listen for a corresponding bump in idle RPM.

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