Vibration when accelerating???

[genejock]

OK. here's the deal..... When I accelerate the whole truck shakes badly. Idle is fine and cruising (no throttle applied) at any speed is fine but as soon as I step on the pedal the shakes are back. This problem also seems to be temperature dependent. For example when I leave for work in the morning the outside temp is around 55 or so degrees and the shaking is very bad. When I go home from work the outside temp is around 80 degrees or so and the shaking is still there but not as bad.

I just put a new a4ld tranny in about 10k miles ago. I am wondering if something could have come loose and be causing this problem. So I crawled under the truck last night and did a quick inspection but found nothing significant (I think). The two bottom bolts on the bellhousing (the only bellhousing bolts I could get to without removing the transfer case) were not as tight as they should have been. They were tight, but needed an extra 1/4 turn( not much, right?). So my question is: could the other bellhousing bolts be looser than these which could result in these bad vibrations during acceleration???

I really don't want to take the transfer case out to get to the upper bellhousing bolts, but if I have to, Oh well. Any other ideas or suggestions would be greatly appreciated.

Thanks,

Steve

 

[HIX]

Change your u-joints first. It'll cost you 30 bux in parts and will most likely fix the problem.

 

[genejock]

Which U-joints? Or should I go ahead and replace all of them?

 

[HIX]

I would change both of the rear u-joints. It is a pretty straight forward operation. Unless you have all-wheel drive they would be the only ones that could induce vibration when you are in 2wd.

 

[olivesman]

sounds like HIX fixed your problem. good job man.

the only other thing i could think of would be motor mounts or a real bad front end. -russel

 

[genejock]

Thanks for all the input. I'll slap 2 new u-joints in this weekend.

 

[genejock]

FYI....

The u-joints were a great fix. She rides smooth as butter now. Thanks!

Steve