Bad Vibration @ Speed

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Feb 18, 2005 | 06:11 AM

russp

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Joined: Feb 2005

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Bad Vibration @ Speed

Greetings,
I have a 96 F250 XLT 4X4 truck with 204000, miles. Yesterday I started to get a vibration at 60 and it gets worse as I increase speed. When I back off the throttle and coast it goes away. It may be there at slower speeds but I don't notice it. At first it felt like a tire was coming apart but they are new and it stops while coasting so I ruled that out. Could it be Torque Converter flutter?
I suspect it to be from the drive train or rear end as the vibration comes through the seat not the wheel.

I know it's next to imposable to troubleshute a truck online, I'm just looking for ideas as this BB is a goldmine of information.

I may have to find a fair competnent mechanic, anyone from SE Florida (Treasure Coast) on the board with a recomendation.

Thanks,
RussP

Feb 18, 2005 | 06:23 AM

ltfox

Fleet Mechanic

Joined: Oct 2003

Posts: 1,764

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From: CentralEastern Utah

You say new tires... maybe a wheel did'nt get balanced properly?? just a thought.

Feb 18, 2005 | 09:55 AM

CEP

Junior User

Joined: Jul 2003

Posts: 65

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From: NH

Re-check the banlance on your tires and look at your U-joints. Just had my rear u-joint go out at 75K, displayed simular symtoms as yours.

Feb 18, 2005 | 11:17 AM

78fordman

Cargo Master

Joined: Oct 2003

Posts: 2,833

Likes: 4

From: Jefferson, Iowa

check the u-joints, carrier bearing and that sort of thing.

Feb 18, 2005 | 02:55 PM

russp

Thread Starter

New User

Joined: Feb 2005

Posts: 13

Likes: 0

Problem solved!!

Even though the rear U-Joint appeared to be solid the needel bearings were replaced with a pile of rust. It took 2 tries to get the corect part as my truck has the 1 ton version u-joint. Not bad 200,000. on a U-Joint.
Thanks for all the help,
RussP

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