SOURCE: Howling in the rear end.
I have a front wheel drive and at 120k I had noise in the back. It turned out to be a bad wheel bearing. It was tough to diagnosis because the quick check is to see if the wheel wobbles when pulled, but mine didn't. It wasn't untl they put it on a lift and found the wheel wouldn't roll freely.
Mark
SOURCE: whining noise when the engine running
Yep, That was it. i followed a link to trailvoy.com and found a video with the same noise and links to how to repair. My husband fixed it yesterday and the noise is no more!! Good Luck..
SOURCE: F150 2003 5.4L Vibration throughout truck with acceleration
When you say "throughout" that would indicate that it is coming from the rear of the truck..
There could be a number things causing this..
It could be a bad tire or a broken belt on a tire..
A test for this is - roll along at 3 miles per hour.. If you feel a wobble - that is probably a broken belt in a tire..
Or maybe even a bent axle..
It could be a bad universal in the drive shaft..
It could be a broken shock/strut or mount or both..
Best of luck !
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