Grinding/Thunk on Accel and Decel What could it be? (7 Viewers)

[mgriff67]

Hi everyone,

I got my 1994 fj80 not long ago and it’s got its quirks. The big one is like to address now is this thumping/grinding noise that happens on acceleration and deceleration. It only occurs when the pedal is at the very end of its return travel or beginning of acceleration. There is a notable thump that occurs when both accelerating and decelerating. I can’t tell if it’s from the center diff, transfer case, but I jiggled the driveshaft and there wasn’t any play in the U joints. Anybody able to shine some light on the situation? Thanks!


Here is a link to a YouTube short of the noise:

 

[Themcfarland]

I bet ya its either the Joints or you have a loose pinion nut /busted seal/dry gears.
ujoints are typical .
I say ujoints as you are taking the slack out of the shaft when your pedal is where you describe it..