Rear End Noise Low Speeds Please Help

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Jan 20, 2017 | 10:50 PM

#16

Turbo X_J

CF Veteran

Joined: Sep 2009

Posts: 8,567

Likes: 20

From: ☼ Blackhole Sun

Year: My Jeep is a GMC

Is this happening in 4Wd on dry pavement?

Jan 20, 2017 | 11:18 PM

#17

Ozmac619

Thread Starter

Newbie

Joined: Jan 2017

Posts: 10

Likes: 0

Year: 1990

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Turbo X_J

Is this happening in 4Wd on dry pavement?

It happens in 2wd on the pavement.

Jan 21, 2017 | 08:10 AM

#18

Turbo X_J

CF Veteran

Joined: Sep 2009

Posts: 8,567

Likes: 20

From: ☼ Blackhole Sun

Year: My Jeep is a GMC

I'm afraid the 21 questions approach isn't going to work, you'll actually have to investigate this issue yourself or refer it to a competent mechanic.

Jan 22, 2017 | 01:57 PM

#19

Jeepin'_Aint_EZ

CF Veteran

Joined: Jan 2012

Posts: 2,208

Likes: 5

From: Ocean County, NJ

Year: 1998

Model: Cherokee

Engine: 4.0L

Quote:

Originally Posted by Ozmac619

When I opened it up the gears looked okay but I didn't have it lifted off the ground so I couldn't spin the tires and inspect all of the gears. There was no debris at the bottom or anything. The guy before me was talking about a limited slip in the rear.

You answered part of my question. Is there an actual locker in the differential or are there spider gears?

Did it look like this:

A

OR

This:

B

Jan 22, 2017 | 03:58 PM

#20

Ozmac619

Thread Starter

Newbie

Joined: Jan 2017

Posts: 10

Likes: 0

Year: 1990

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Jeepin'_Aint_EZ

You answered part of my question. Is there an actual locker in the differential or are there spider gears?

Did it look like this:

A

OR

This:

B

It looks like A.

Jan 23, 2017 | 03:38 PM

#21

Superslow

Junior Member

Joined: Mar 2014

Posts: 75

Likes: 1

From: NorCal

Year: 1998

Model: Cherokee

Engine: 4.0

When I got my XJ a few years ago the backend would hop around a bit in tight turns at low speed. Turns out it had a LSD so I changed the differential oil and doubled up on the friction modifier additive it has worked just fine ever since.

Subsequent gear oil changes I just use dif oil with friction modifier already added.

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