Help PLS!!!
I try all and my Dealer is not find the problem!
I have Prosche Cayenne turbo 2003 and sometime when i start to drive i have hard vibration (feels from the front wheels of the car).
After a few second its go a way.
Also when i lock the 4X4 i fill and Hear Clicks sound from the Bottom vehicle.

I all ready replaced the following parts:
1. Transfer case (2 times)
2. front diff
3. 2 front Axle Shaft (After i replace the Axle Shaft the car get very hard to Accelerate...)

Bout of the driveshaft looks good...

Any one can help my as i'm rely don't know how to solved it and its look like the Porsche dealer don't know also.

 

I would guess the front diff, but it can't be that if its all new and hopefully installed properly. I would go back to the mechanic who last worked on it and see if they can fix it. It should not be running worse after having new parts installed. It is the mechanics obligation now, I'd say.