Engine/Transmission (1998.5 - 2002) Truck vibrates badly at 30-35 MPH?....

[Dixie Dawg]

just started the first of this week, and has gotten progressivly worse every day. Everything is fine up until 30, then it shakes and shimmy's, goes away about 40. For whatever reason it seems to be worse at night, but not positive about that. If I let off the accelerator it goes away immediatly, only happens when under power. Any ideas? U-Joint?

 

[AKAMAC]

. Any ideas? U-Joint?

Be my bet.

 

[BKenny]

I was getting vibrations from my 94 Bronco i though mabey i lost a wheel weight it started geting worst so i climed under and started checking u-joints. I could,nt beleive what i found ,my rear drive shaft at the transfer case was missing one bolt and the other three wher loose . Id check all your drive line u joints and center souport bearing.