What could a thumping noise be when I start my car and put it in drive

10

Asked by Koorslite29 Sep 08, 2015 at 06:29 PM about the 2005 Ford Explorer XLT Sport V6 4WD

Question type: Maintenance & Repair

2 Answers

74,210

Does the thump increase and decrease with the RPM's when the vehicle is standing still? If so, rule out the wheels. Does it sound like it is coming from the engine compartment? See if the idler pulley is vibrating. Look at all your belt driven items and see if they are vibrating. Could be a cam tensioner.

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