Source of Vibration at 65-85 mph?? | Ford Explorer Forums

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Source of Vibration at 65-85 mph??

jeffmaaske

New Member
Joined
December 27, 2008
Messages
6
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City, State
Milwaukee, WI
Year, Model & Trim Level
2005 XLT 4.6L
2005 XLT V8 4x4 w/o trailer tow option, 20k miles

Bought this truck used 5 mos ago. Runs quiet until 65. I get a loud low vibration/noise from 65 to 85. I do not feel it in the steering wheel. It is louder when I coast than when I accelerate. It is still present if I shift into neutral.

I read a lot of posts on this issue, but before I pay someone to "fix" it, I'd like to figure out for certain if it's the drive shaft or the rear diff.
There is a TSB that says the drive shaft should be replaced with a premium balanced drive shaft.

Is there a cheap way to eliminate one or the other possible sources?

Please help.
 






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