Transmission or bearing vibration? - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 04-02-2013, 05:58 PM Thread Starter
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Transmission or bearing vibration?

Hey guys got a 03 F250 4x4 and I am having an odd vibration on the drivers side floordboard and a loud howling sound in 2wheel. I have thought hub assembly but I am leaning towards transmission now. It's noticable in the mid to high 50 MPH then around 60 to 70 it gets a loud howling, almost like tire sound but I'm sure it's mechanical, there brand spankin new BFGs A/T, balanced, aligned and all. When I let off the accelerator the howling kind of changes, like reverses itself, and then back on the gas it comes back. When I hit about 80 it quiets a little.

Things I have done so far is the carrier bearing, and still vibrates. U joints on the driveshaft looked in good shape but we know how looks can go with those and I'm 90% positive it's in the front end, also I made sure the driveshaft went right back in the way it came out. I feel no vibration in my brake pedal or steering. I don't really feel it in the seat, more under my feet if I place them under the gas and brake. Thanks fellas
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post #2 of 2 Old 04-11-2013, 05:02 PM
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jack the front end up and shake the tire , pull out on the top, push in on the bottom. Then reverse the motion. This will tell you if the bearing is bad. If there is any question about the ujoints, change them. Bad ujoints will destroy the trans and t case. $200 for ujoints or$2,000 for trans.
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