98XJ4X4

i have a 98 cherokee sport and yesterday the rear end started making a winding noise and it sound like its from the drivers side, but the thing is it only makes this noise as i step on the gas pedal, almost as if its under pressure when it starts. if it helps any, the rear end is a chrysler 8.25

98XJ4X4

can anyone give me any tips on this problem, the whinding noise only appears when my foot is on the pedal and when im coasting it goes away?

96Cherokee113

I have the same problem. It's whined ever since I bought the Jeep and it's most likely the carrier bearings. Were you putting the Jeep under any stress when the noise appeared? Like wheeling, burnouts, donuts, etc?

98XJ4X4

no, that's the thing, i wasn't screwing around or anything i was just going up a hill to get gas and i heard it immediately. and as i reached the top of the hill and coasted into the gas station it stopped. either 1) its the carrier bearing or 2) the pinion bearing

builtnotbought89'

Try picking it up off the ground & trying to lisen for where its coming from, but its a comon problem in xj, zj, & wj to have whinning in the rear end!!!

98XJ4X4

now when hearing for noises, should i look inside the diff for anything different or any wear on anything?

96Cherokee113

Yea, I'd pop the cover off and see if everything is tight down there. Jack it up and see if it spins freely and evenly. The backlash may be off, but who knows, I'm no differential pro. This is just what was recommended to me and makes sense, but it's too cold to tear everything apart. I just put in louder speakers and crank up the radio anytime I do above 35 mph

Molon Labe

I had this problem in my 84 camaro. It was a poorly worn ring and pinion.

They will whine if worn poorly or setup wrong. how many miles are on it?

captainwoot

sounds like pinion brgs, If you jack up the rear ,remove wheels and drums, and rear driveshaft, rotate the yoke by hand , if the brgs have failed you will likley feel it. Also if you have a "new" pinion seal leak that couldbe a telltale sign

xjwoody

I know this is a late post. Not sure if you still have the problem, but this might help you to diagnoise your problem.

Check this site out.

www.ringpinion.com

Click on "Technical Help" tab on top of page
Click on "How-to" on the pull down menu
Under "General Info", Click on "Diagnosing Noise (Part 1 & 2)"

Good luck.