Okay i have a 96 ford f-150 and at accel it has vibrations in drivetrain and at highway speed it vibrates... also feels like drive line or trans spins half a turn then grads... its a manual so im not sure what it could be?

 

start witn a fresh wheel balance first

 

I did go off roading that could have thrown them off?

 

you might just have mud packed on the wheels, i have had to pull mine off to clean at times, you also might have hit the drive shafts on rocks causing them to bend and get out of balance.

 

I would high-speed balance the tires, if that doesn't work, then your going to have to change your driveshaft, I had to change my driveshaft, cause while off-roading I went over a boulder, and damaged it, my truck would shake so bad, that the driveshaft would snap out of the u-joint !!

 

another question have anyone here ever had a new u joint hang up in the cold weather and one broken free work fine?

 

hard to understand what your trying to say, but after installing u-joints you need to tap the yolks to neutral the caps so the u-joint moves/bends at all angles freely.

 

And don't forget to lube your u-joints !!!