Originally Posted by
senix
Try this and report back.
Manually turn the hubs to the locked position and drive the truck.
Do not turn the switch.
Still have the vibration?
I will give that a try tomorrow and report back
Originally Posted by
Pinzer
Check the Cardan joint on the front drive shaft as well. I just replaced one on an '02 F350. Had a vibration and rumbling noise when in 4x4.
What is a Cardan joint?
Is that a fancy new name for the U-joint?
Thanks for the ideas so far.
