UK Car Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry that you have not been helped yet. I just came online and saw your question
Does it judder just when initially taking off in 4wd Hi, or at all speeds in 4wd Hi?
Can you feel any air coming in thru the passenger side footwell when you are hearing the whooshing sound, or notice that the air at the vents change which vents it comes thru?
Please remember that I am not there and therefore rely on you to provide as much detail as possible and at times may need to ask for clarification or more information.
Does the whooshing sound happen whether in 4wd hi or not, or only when in 4wd hi and related to the shudder?
Any binding in 4wd hi when turning at low speeds?
The front differential has axles with a constant velocity joint (C.V. joint) which slides in the axial direction. The joint is composed of an outer race, cage, inner race and balls. In the turning direction, the joint rotates in the same way as a ball bearing. The balls lock rotation completely and transmit drive. In addition this vehicle is also characterized by a function that the shaft can slide through the balls in the grooves of the outer race in the extension/contraction direction of the drive shaft.
These are more common to bind when failing and need to be checked. This can also cause the juddering
If ok, then it is internal in the transfer case and will need to be dropped and either rebuilt or replaced
On the whooshing noise, I am afraid that this is something will have to be heard to diagnose