Drivetrain vibration
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New User
Joined: Aug 2010
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Drivetrain vibration
I have a 2000 F150 4x4, 5.4L and when I am coasting at 70 mph I get a vibration from the rear. I also get a strong vibration when I turn from a stop, mostly when I am towing. The u-joints have been replaced atleast once that I know of. I am not sure if I have the limited slip in the diff or not. What could this be from.
Senior User
Joined: Aug 2009
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Probably worn clutch pack in rearend if limited slip. Which I imagine is what you have. Vibration when turning left and accelerating is sure sign of this. You might try changing the diff. fluid and adding the friction modifier as called for. If the clutches aren't too badly worn this should
eliminate the vibration.
eliminate the vibration.
Hotshot
Joined: Jul 2005
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clutch dont work at 70 MPH in a straight line. could be a variety of things, but tires are the first place to look. Change out the back with a spare set, or switch front and rear and see if location of vibration changes.
Senior User
Joined: Aug 2009
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Tires wouldn't cause a strong vibration when turning . He also stated that it's worse when turning and towing . That's a classic sign of a worn clutch pack. I would also check the axle bearings for that high speed vibration. When did you last change the fluid? Is it low?
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