Knocking noise in front differential? -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > Knocking noise in front differential?

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineVisit For ShockTober Deals on Monroe shocks andAdvance Adapters SYE Kits

Unread 02-28-2011, 02:14 PM   #1
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   Reply With Quote
Unread 02-28-2011, 02:45 PM   #2
Web Wheeler
xjfever's Avatar
1995 XJ Cherokee 
Join Date: Feb 2008
Location: north Ga.
Posts: 14,212
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   Reply With Quote
Unread 02-28-2011, 02:48 PM   #3
Real Jeeps have dents.
CJ7-Tim's Avatar
2000 XJ Cherokee 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 21,634
Then inspect the u-joints and check torque and the bushings on the track bar and control arm bolts.

According to the National Shooting Sports Foundation, AR-15 sporting rifles account for nearly 20% of all U.S. firearms sales.

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   Reply With Quote
Unread 02-28-2011, 02:53 PM   #4
Registered User
1998 XJ Cherokee 
Join Date: Aug 2007
Location: Washington, DC
Posts: 4,023
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.
2004 Grand Cherokee Overland
OME HD/5100s - 31" Toyo AT2
dcorn is offline   Reply With Quote

4x4 , differential , steering , vibrations
Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.