vibration is driving me nuts!!! - Ford Powerstroke Diesel Forum
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Old 07-12-2012, 01:17 PM
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vibration is driving me nuts!!!

hey all, i have a 2002 f-250 7.3 with a 4 inch lift with 35x12.50x17 mickey Thompson MTZs. I have a vibration in the truck from around 70 to 80 mph feels mostly in the seats (from the rear) but makes the whole truck shake if that makes sence. ive been dealing with this for two years and its driving me crazy. it doesnt matter what tires i have on it i have had two sets with the same result, even different wheels and its still there rotating doesn't change anything either. we have gone as far as putting a new OE drive shaft in and that didnt change it so i went out and spent a few bucks on a custom one piece. no change. have change brakes more than once still the same issue. i had the rear rebuilt about 3-4 years ago, so i thought maybe something in the rear was fed up again pulled the cover and everything looks new still. i have been all over the internet looking for things to try i have called other shop i work with they have no idea. talked with a friend at ford and he was at a loss so im reaching out to you guys for help., if theres anything you can think i should try let me know ill do it if you need more info on anything let me know and ill do my best to fill in any blank spots.

thank in advance
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Old 07-12-2012, 07:45 PM
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Shim the carrier bearing maybe?

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Old 07-13-2012, 05:36 AM
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i tried that when i had the two piece drive shaft in, moved it many time to all different angles and we it was still there that's why i went out and got the one piece shaft to get rid of the carrier bearing and that didn't solve it. it did get rid of the axle wrap on launch tho.
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Old 07-14-2012, 12:54 PM
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Have you checked everything up front
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Old 07-18-2012, 11:34 AM
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smoother rear shocks
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Old 07-18-2012, 12:11 PM
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Quote:
Originally Posted by jc82chevyman View Post
Have you checked everything up front
I'll second that, i had a similar vibration for a couple of years i swore was coming from the back. It also would show up sporadically from a stop until i'd hit a good bump. i had the shaft re-balanced, rear shocks, tires, etc. etc. finally one day my front wheel locked up, my front hub had self destructed. turns out that's where the vibration was coming from, i didn't know anything about hub maintenance at the time. How it made it feel like it was coming from the back i don't know, but it fooled me, and many others that looked at it or rode with me.

Cant hurt to jack it up and give the front wheels a twist. from what you describe, it really does sound like the same vibration i had.

Had to chuckle at your title, reminds me of an old pirate joke, arrrgh, its driving me nuts!
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