Bad Vibration

[fishnbas2]

I have a 97 Exploder. Suddenly last nite when i started to drive I felt a vibration. Its really bad around 35mph accelerating. If I let off the gas then it not as bad. The vibration get faster with speed but is worse at 35. I have ruled out loose wheels, tranny, engine. Im thinking possibly transfer case or driveline. I have redone the transfer case with the new cases for the shift fork bushings. This vibration feels to be in the rear area. Anyone have any ides or things I should check before I start dismantling it. Thanks in advance.:exp:

 

[swetrid]

Sounds like u-joints.

 

[fishnbas2]

Thats kind of what I was thinking after reading more on here. Any ideas on the easist way to check them??

 

[waskly]

disconnect the shafts, and see if the joints move freely or do they bind, sized.