what would cause a 2008 f150 4/4 to vibrate also shut off along with a loud knocking while sitting and or while bavking up?

Asked by Mar 10, 2014 at 10:50 AM about the 2008 Ford F-150 60th Anniversary SuperCrew SB 4WD

Question type: Maintenance & Repair

the truck run find until after a short time of driving it.then it will start vibrating but smooth
itself out than turn the wheel to back up to park or just backing up the will vibrate with a
loud knocking noise but shortly it will stop  and also something it will shut off.

1 Answer

22,070

Is the knocking noise coming from the engine? If you sit in it (in park) and turn the wheel, does it still vibrate? Look at the engine while someone turns the wheel. Is the engine vibrating or is in the powering steering unit.

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