driveline vibration and loud squeeling

[95XL]

I've got an '02 f-350, CC, LB, and it has a bad vibration that i can't pinpoint where its coming from. It usually happens at about 40-45 mph, and then again at anything above 70. It feels a lot worse than a tire balance issue, at 40 it feels like the whole truck hops up and down, then at 70 it kind of feels like tire balance but worse. Then today I noticed that when I take off from a stop there is a loud and prolonged squeel. It doesnt sound like a u-joint squeak, sounds more like brakes, but louder, and it sounds like its coming from the rear of the truck. Could a bad driveshaft carrier bearing be causing all this ruckus? Open to any other suggestions...

[mbahr22250]

Originally Posted by 95XL

Could a bad driveshaft carrier bearing be causing all this ruckus?

Yes. When mine went out on my last truck, everything you just described happened.

EDIT: BTW I love your tattoo. I've been thinking of getting something similar on my back.

[Oakville Tugs]

Is the bearing easy to access or a bearing on the driveshaft?

I have the EXACT same problem at th EXACT same MPH!!

[Oakville Tugs]

Has anyone changed a rear end carrier bearing that can give me some tips?

Thanks

[95XL]

I just unbolted the bearing from the crossmember so I could spin it around the driveshaft and listen to it, it had no play in it to speak of, but it does kind of sound like a dry ball bearing when I spin it, but not much, kind of faint. It doesnt seem like thats the problem, but i guess it could be. Anybody else's sound like this with no play?

oakville, the bearing itself is super-easy to get to, getting it off the shaft is something I haven't tackled yet.

[02SOMZ]

Carrier Bearing Replacement W/pics. - Ford Truck Enthusiasts Forums

[jc82chevyman]

Buddy had the same issue I did all three u-joints carrier bearing and a spline grease job and still has the same vibration

[BryanH]

I got a vibration and thought in was the front bearing b/c I feel it in the steering wheel. Mine starts at 55mph. I am in New Orleans tonight and a bit nervous about heading home. Any progress on this issue y'all?

[kelti819]

im having the same issues, i have had the wheels balanced and rotated and im leaning towards the hub bearings, or ball joints, but the ball joints are fairly new.

[derck_mullin]

Any updates on this? I just did my carrier bearing today and took the truck out. No dice...still same vibration although it seems a "little" better. The bearing was totally shot and was actually leaving some gunk on my driveshaft. I really had to hit it with a wire brush to clean it. I thought for sure that would have been it, but to no avail.

Mine seems to be really bad between 35-40 and anything above 65 I have the vibration. I also get a clunk under the truck when hitting bumps. I guess I'm gonna start looking at other places.

Any ideas????