http://youtube.com/watch?v=81HwnPQZm-4

Can anyone give an account on what a bad ring and pinion gear sounds/feels like? I have this issue where under a certain acceleration, cruising, or just letting my foot off the gas ( say 3rd gear ) there's a audible grinding sound of sorts that varies to how I'm driving - like how this is described

Symptom: really bad noises from drivetrain that change dramatically between acceleration, light throttle cruise, and deceleration

Probable Problem/Solution: Ring and Pinion are bad. The 3rd member must be rebuilt or replaced.

The symptom is almost on par ( the vid is at 50mph in 4th gear )