Vibration at highway speeds

[fordandajeep]

I have a 2005 F-250 no mods to the drivetrain or engine except a K&N intake. My cab vibrates pretty significantly between 45 and 70mph and only if the revs are above 1500. Before 45 and after 70 there is no vibration and if I'm coasting down a hill or to a stop there is no vibration. My intital thoughts were bent driveshaft, but I crawled under there and there are no impact marks. The next step I would assume is to get the drive shaft rebalanced but I was wondering before if there were any other options or if I was approaching this from the wrong angle. Any help would be appreciated!

[paoness]

Check u-joints


Sent from Autoguide on iPhone

[RRF985]

I had that same problem. I had a couple bad u-joints.

[Fox Hunt]

I have the same problem too. I think mine is my tires though. drive line and everything checks out. Tires are almost wore out and I hope to have different results with new tires.

[fordandajeep]

just replaced the u joints and center support bearing and everythings perfect thanks!