rear end clunk in Liberty - Jeep Garage - Jeep Forum

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Old 10-17-2015, 02:38 PM
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rear end clunk in Liberty

when cresting a hill and leaving off accelerator there is a loud knock, also when accelerating very quickly a loud knock at the end of the shift. checked motor mount, and trans mount but are not broken. Just pray it is not transmission going out. any help appreciated>>>>>>stuck in Vieques P/R.

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Old 10-18-2015, 08:15 PM
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Re: rear end clunk in Liberty

Welcome to the garage.
Which jeep?
I would first look at the prop shaft u joints for play. If ok, than check the rear diff fluid level and take a sample to check for metal flakes.
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Old 10-27-2015, 07:07 PM
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Re: rear end clunk in Liberty

Another thing to check is the upper control arm on the rear diff. Shaped like a boomerang. Has a ball joint at the center, mounted to the top of the diff, then each end bolts to the frame. Lay under it with a flash light trained on that ball joint and have someone rock the truck back and forth. Should be a little movement because it's rubber, but shouldn't jump up and down. Whole control arm on rock auto for 100 and 30 or so, or you can just change the ball joint.
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