Thread: Vibration then noises similar to metal rattling

I would check the uni-joints on the front tailshaft, esp. the one nearest the transfer case, if buggered fix straight away. if the tailsht comes adrift it can cause a hell of a lot of damage. if not, look to the clutch plate/throwout bearing, also check the handbrake drum isn't loose, Regards Frank.

As with Frank, it is most likely to be a U-joint, either worn or with flange bolts loose. This should be checked immediately (before further driving) and if this is the case rectified. You definitely do not want a U-joint letting go while driving. Particularly if it is the one at the rear of the front shaft (which is most likely, as I seem to remember hearing that the aircon condensed water drips onto it) this will probably cause major damage to the gearbox, transfer case and bodywork, and could cause injury if it penetrates the floor.

There are other possibilities, and I would also check for loose wheels.
John

i had that uni go on me in my 300TDi with a squeak and a little vibration but there was no movement at all in the uni when a shook it. finally found it by taking a small couple hundred metre drive first thing in the morning adn tried to shake the shaft to find the uni warm and all the others cold. apon removing i found it totally seized.
if it got loose there are plenty of expensive parts around there to damage