Originally Posted by 16g-95gsx
On my 1996 ZJ Grand Cherokee V8 with a 3" lift I have a very loud whine coming from the rear. At this point only the rear driveshaft is hooked up, as the previous owner removed the front shaft. I am running 31" BFG AT's and have changed out the fluid in the diff. I'm curious what you feel may be the cause and what I should check for? Being new to Jeeps I'm curious if there are standard failure points for something like this, or things that you would recommend me do in order to diagnose it. Thanks in advance for any help you can give a Jeep newb.
Need a better more concise description of the noise, when you hear it, if its only under a load or acceleration or when coasting or all of the time while moving.
If it whines when you accelerate it is likely pinion bearing.