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Old 05-25-2006, 11:40 PM   #1
99 AZSahara's Avatar
Join Date: May 2006
Location: Arizona
Posts: 25
Shifting gears bang or thump sound?

1999 4.0 3" Teraflex w/33-12.5 67,000. I have no problem engaging the gears, when I release the clutch the gears 1-3 seem to bang or thump when engaged. The rear sway bar does have some play when I tug on it not much. All fluids are new. U-Joint? I would appreciate any suggestions.

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Old 05-26-2006, 08:51 AM   #2
coilovers are damn flexy
bluvikng's Avatar
Join Date: Mar 2006
Location: Texas
Posts: 3,260
If you have play in your sway bar, that may be causing the thump when you ingage the drive line. Ours did that for a while, until I got under there and tightened up all the bolts. Not a good thing to have play in the linkages. Try that first, re-torque all of the bolts, and nuts, connecting your axles to your frame. See if that works.

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Old 01-28-2009, 12:14 AM   #3
Join Date: Jan 2009
Posts: 1

i have a 03 tj 4.0L 5 speed 4" rough contry that thunks i have not had money or time to look at it i was thinking its the springs in the clutch shot broken did you find the problem???
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