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Old 11-10-2008, 12:44 PM   #1
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new here and requesting help from the jeep gurus

Hi, just purchased a jeep 4.0 auto and it seems to have a clunk sound right before shifting. If I accelerate all through the gears, everything is fine and no clunk sound. If I accelerate and ease of the pedal before the shift point, i get a loud clunk/pop noise. It sounds like its coming from the rear. Maybe the drivetrain. the rear is a dana 44 w/ an air locker. Havent opened and looked at the drivetrain yet. Changed fluids already thinking that was the problem. Any one else experience a similiar problem? Any help is greatly apperciated. Thanks
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Old 11-10-2008, 12:49 PM   #2
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check the u joints

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Old 11-10-2008, 02:28 PM   #3
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Quote:
Originally Posted by mknight759 View Post
check the u joints
x2 or the control arms
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Old 11-10-2008, 02:58 PM   #4
that's what she said

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probably the u joints in rear drive shaft. i had that same thing happen to he a month ago the bearings in the ujoint were completely missing. it is a simple $20 fix, but when you hear that horrifying clunk you think the worst. get under the jeep and try to wiggle it. ig it moves you need new u joints
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Old 11-10-2008, 05:51 PM   #5
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Thanks everyone. Im going to change out the universal joints and see how it goes.
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Old 11-10-2008, 10:12 PM   #6
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Angry

Just finish changing the u joints and checking the arms. Unfortunately, that too didnt solve the problem. Im starting to think it might be my transmission. Any other suggestions or thoughts before I suck it up and take it to a trans shop? Thanks for all the help.
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Old 11-10-2008, 10:45 PM   #7
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how many miles check everthing see if anything is loose mounts springs anything and everthing before you take it somewere
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Old 11-11-2008, 07:11 AM   #8
I got nothin'

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I would also take a look at your transmission mount to see if it is cracked/loose and allowing too much play on the skidplate.

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