Ok yall I really need some help. I have been chasing this forever now and I am SOOO sick of it I find myself not even wanting to drive my 4runner.
Here is the deal, while coasting I get a grinding noise that sounds like its coming from the Tcase. I have replaced the tcase, both driveshafts and all u-joints. It still happens. The faster I go the worse it gets. This only happens when there is no load on the drive train. If I am using the engine to break or accelerating the noise goes away. Here is a link to a video of the problem, sorry its shot at night.
https://www.youtube.com/watch?v=Euy8xB9J_3E
Please any help would be greatly appreciated!!