Knocking noise in front differential? -
LinkBack Thread Tools
post #1 of 4 Old 02-28-2011, 03:14 PM Thread Starter
Registered User
2000 XJ Cherokee 
Join Date: Jun 2008
Location: Virginia
Posts: 29
Knocking noise in front differential?

The last few weeks I have noticed that at very low speeds (x < 10 mph) I have heard and felt knocking in my 2000 4.0. By the way the vibrations come through the gas pedal and the steering wheel, it feels like it might be the front differential spinning up (or something other to do with the front differential?). I got the underside hung up a few weeks ago and actually crashed down on it fairly hard (that darn curb drop-off is going to pay ) 4x4 still works fine and I have noticed no problems other than the vibrations. I've read people have figured similar problems to be the exhaust even? It was at least somewhat affected by my little accident as well.

Does anyone have any experience with something like this? I'm still very new to the forum and may not have described this very well, but if anyone has any advice that'd be great.

nyaben is offline  
Sponsored Links
post #2 of 4 Old 02-28-2011, 03:45 PM
Web Wheeler
xjfever's Avatar
1995 XJ Cherokee 
Join Date: Feb 2008
Location: north Ga.
Posts: 14,216
I would pull the cover and inspect the gears first.

  1. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb
  2. Sold'99 WJ limited, 4.7L, 3" IRO lift. Bilstein shocks, JK rubicon wheels, 255/70/17's, carolina driveshaft, IRO adjustable control arms, IRO adjustable A-arm
  3. Sold '00 TJ, 4" lift, rusty's adjustable control arms, skyjacker shocks, rock krawler adj. trac-bar,rugged ridge SYE and RE driveshaft, soft 8's, 35" mud king xt's,XJ HP D30 w/aussie locker, 4:88 yukon gears, hella 500's, rock crusher diff covers
4. 04 Dodge ram 1500 quadcab, yes, it has a hemi.
5. '08 BMW X3, Mods in progress.
xjfever is offline  
post #3 of 4 Old 02-28-2011, 03:48 PM
Real Jeeps have dents
CJ7-Tim's Avatar
2000 XJ Cherokee 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 25,860
Then inspect the u-joints and check torque and the bushings on the track bar and control arm bolts.


A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
post #4 of 4 Old 02-28-2011, 03:53 PM
Registered User
1998 XJ Cherokee 
Join Date: Aug 2007
Posts: 4,291
I had a weird knocking in my rear diff. Turns out 4 teeth had broken off the ring gear. I drove over a bit more than a curb though...

Have you looked at anything in the front axle yet? Check everything that moves when you drive, especially u-joints in the axle and driveshaft.

2014 Jeep Grand Cherokee Summit
dcorn is offline  

4x4 , differential , steering , vibrations

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Front differential noise? Phil12 XJ Cherokee Technical Forum 8 08-30-2010 03:54 PM
Knocking noise from front left on take off jjay69 XJ Cherokee Technical Forum 0 06-16-2010 04:04 AM
Front Differential noise djkirwin XJ Cherokee Technical Forum 4 06-16-2008 05:32 PM
%&#$@* knocking noise in the front end firehawk XJ Cherokee Technical Forum 5 09-02-2006 11:44 PM
Knocking noise berubeny XJ Cherokee Technical Forum 6 10-24-2005 03:19 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome