Lifted truck vibration prob - Ford Powerstroke Diesel Forum

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post #1 of 14 Old 09-30-2009, 04:03 PM Thread Starter
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Lifted truck vibration prob

I just put on one ups traction blocks and the problem got worse before at 65 mph there was a slight vibration or noise that would happen at very ,very light throttle that was with a 6" lift now the backend has 1 1/2 inch higher lift because I tow, and needed the extra lift to tow with out to much sag. before the traction blocks the truck sat level and like I said there was a very slight vibe but now at 65 is really sounds like azz and even worse if the 4wd is engaged. the trans has been passed buy ford service and the front end is tight everyone seems to think that is coming from the drive line angle being off how can i fix the problem??

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post #2 of 14 Old 09-30-2009, 04:22 PM
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There are shims available to adjust your pinion angle, just search driveshaft angles and you will find some info on proper set-up. May or may not help, Ford shafts are pretty lame. I had the same 65 mph vibe and cuz I'm a picky s.o.b., I finally had a Tom Woods driveshaft made and it is the smoothest truck I've owned.

2006 F-250 4x4 ecsb, Elite stage 2's, VGT-SSX.
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post #3 of 14 Old 09-30-2009, 04:39 PM
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Exactly what ^^^he said. You need to re-adjust your carrier bearing shims everytime you change the height in the rear of your truck. You will need to re-shim or One Up also makes an adjustable carrier bearing bracket. If all of that fails you will need to exchange out the block portion of the traction blocks for ones with a different angle.

Fist attempt the shims......if that doesnt work Dave (One-Up) or Truck Toyzs or Diablo can assist you if you give them some angle measurements from various spots of your drivetrain. Best of luck.....its frustrating but you will cure the vibe!

I believe its 1/8 or 1/4 inch of shim per inch of rear lift.....roughly!

You can't loose with 22's..........
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post #4 of 14 Old 09-30-2009, 05:14 PM Thread Starter
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My truck is only a supercab and I don't think it has a carrier bearing I know the crew cabs do what if I don't the trucks is at the dealer now so I can't go out and look

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post #5 of 14 Old 09-30-2009, 05:53 PM
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Quote:
Originally Posted by extremlx View Post
My truck is only a supercab and I don't think it has a carrier bearing I know the crew cabs do what if I don't the trucks is at the dealer now so I can't go out and look
Mines a sc also, I was talking about shims that go under your leaf spring above your blocks. Alot of a/m springs come with the shims in place, so there is no issue using them. Mine is/was shimmed perfect and the vibe persisted, so the new shaft was my only option. Tom Woods is an excellent source for shimming info, and he can enlighten you on what a piece of clunky crap the factory ones can be.

2006 F-250 4x4 ecsb, Elite stage 2's, VGT-SSX.
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post #6 of 14 Old 09-30-2009, 06:36 PM Thread Starter
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any more input guys?

---LEE---
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post #7 of 14 Old 09-30-2009, 07:35 PM
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I have the same prob, and after my truck was looked at the other day I was told the shims were put in backwards. Ill let you know how it works out when I turn them around tomorrow.

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post #8 of 14 Old 09-30-2009, 08:00 PM
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my truck is an ext cab and when i had a lift on mine i had shims i put them right where the carrier bearing is. you take the 2 bolts out and put the shims in.

that will take all that vibration out

-Evan

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Yeah, but your trucks a freak of nature...
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post #9 of 14 Old 09-30-2009, 08:10 PM
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try one of these carrier bearing drops...






you can adjust it up and down till its perfect... you can even tip it front to back to get it perfect... best design on the market....


if you are interested, let me know and I will get you a price.....

Beware!!!! The King Has Returned
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post #10 of 14 Old 10-01-2009, 02:52 AM
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Extended cab shortbeds don't have carrier bearings, one piece rear shaft.

2006 F-250 4x4 ecsb, Elite stage 2's, VGT-SSX.
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