Clunk/Bang When accelerating in 4x4, and... - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 08-28-2012, 11:52 AM   #1
OpieDP's Avatar
Join Date: Jul 2012
Posts: 164
Clunk/Bang When accelerating in 4x4, and...

Just got my jeep a couple of months ago, 2005 LJ Rubicon, noticed that when in 4x4 either Hi or Lo there is a loud bang/clank noise when I accelerate or decelerate (torque is applied). I checked my U-Joints (Driveshafts) after getting home from work this AM b/c one of the guys I was out with said that was likely the cause. I did not find any play whatsoever in the U-joints, but there seemed to be a lot of play at the diff and at the Tcase in the front shaft. The rear shaft has no play.

I have not checked the Axle U-Joints yet.

I also noticed a high-pitched (but pretty quiet, I have to really pay attention to hear it) noise that only occurs while the Jeep is in motion. Brakes applied vs not makes no difference, turning the wheel side to side makes no difference, clutch in or not makes no diffence. As long as I am moving, it makes a quiet but noticable high-pitched noise... a constant noise until I stop.

Any help appreciated. I understand that some backlash (rotational play) in the front drive shaft is acceptable, but I know that the sound my vehicle makes under torque is not normal... My friend I was wheeling with has no such noise.

OpieDP is offline   Quote
Old 08-28-2012, 12:08 PM   #2
OpieDP's Avatar
Join Date: Jul 2012
Posts: 164
When 4x4 is engaged there is no play in the front drive shaft.

OpieDP is offline   Quote
Old 08-28-2012, 12:21 PM   #3
Join Date: Aug 2012
Posts: 34
spider gears?
dontpanic is offline   Quote
Old 08-28-2012, 12:40 PM   #4
Join Date: Jun 2012
Location: wisconsin
Posts: 27
Mine had the same issue, it turned out to be left front axle joint.
SCHOOLBUSLEO is offline   Quote
Old 08-28-2012, 02:15 PM   #5
Join Date: Jun 2011
Location: Freakville FL
Posts: 494
Locker loading and unloading?
98 TJ
4.0L, 5spd, 4.25 Zone lift, Currie Anti-rock, Trutrac D30, D-locked D35 w/4.56 gears, MCE GEN I Flares, 33" Trxxus ATs, Engo 10K# winch, rear disc brake conversion.

My idea of help from the man above is a sniper on the roof.
Diverdown87 is offline   Quote

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 03:39 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC