Transfer Case Vibration

[idrinkdiesel]

2001 F-250 4x4 there is a weird vibration (random times and speeds) that sounds and feels like a rough road or rumble strip coming from what sounds like the transfer case. When I shift into 4 wheel high it stops. Back in 2 wheel drive it will start up agian. I have checked front hubs and they are working fine. Any ideas what this might be. It just started about 4 days ago.

[99bigred]

no idea...

[mschn99]

check your u joints good...the best way to do that is take the driveshaft all the way out.......

make 100% sure you dont have one hub staying engaged. In 2wd you should freely be able to turn the front driveshaft....and both axles (turn the axles at the u joints)

[floundergigging]

Hope someone on here can help you. There are some pretty sharp people on this board. Just be sure to let us know the final fix

[mako314]

if you have a x-cab or a crew cab,I would check the center carrier bearing in the rear wheel driveshaft it will go out and cause a similer issue.

[Hank]

I've heard/felt it too. Be sure to post any solutions if found. I figured it might be the bearing shim for the 2 piece shaft installed with the lift. Not sure though.

[idrinkdiesel]

Thanks for the feedback. I am able to rotate the front drive shaft freely so I dont think either of the hubs are sticking.

[mschn99]

Originally Posted by idrinkdiesel

Thanks for the feedback. I am able to rotate the front drive shaft freely so I dont think either of the hubs are sticking.

check the axles....you would be able to rotate the driveshaft if only one hub is stuck engaged......thats why i said to check each axle...

[idrinkdiesel]

Thanks for the great tips. Everything is turning freely. U-joints at front axels and front drive shaft. One of the things I notices is that when I hit a bump it will trigger this noise and vibration. It will even cause it to stop too if I hit another bump.

Hank you mentioned the shim on the drive shaft. How would I check that? Any additonal input is much appreciated. Thanks a lot guys.

[seadoo48]

did you end up finding out what your problem was? im dealing with it too. i put in new front driveshaft and new hubs and it still does the vibration?