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Old 08-21-2010, 01:14 PM   #1
Join Date: Aug 2010
Posts: 5
Rear end pop/clunk

What seems to be coming from the rear axle when i take off from a stop while making a turn, and sometimes while taking off from a stop going up hill is a pop or series of small pops. Wondering if anyone may have a suggestion on what it is or what needs to be done to fix it? Thanks.

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Old 08-22-2010, 03:43 AM   #2
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Got the same coming from my 93YJ . Got some play in rear wheels . Thinking axle shafts are moving in and out. UJ's aren't worn. Diff not noisy at higher speeds. Hope you get some good feedback as i need it too.

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Old 08-22-2010, 10:22 AM   #3
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Check the fluid level in your rear diff. Also check your Pinion Yoke for wear and make sure the U-joint bolts are tight.
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Old 08-22-2010, 11:01 AM   #4
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my rear end was making some noises too, yesterday i pulled the cover to drain the fluid and replace it and this is what i found

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Old 08-22-2010, 11:17 AM   #5

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As long as the ring/pinion are good thats an easy fix.
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Old 08-22-2010, 08:14 PM   #6
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I was thinking thats what it might be. Thanks for the suggestions ill have to check that.
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Old 08-23-2010, 04:17 PM   #7
Join Date: Apr 2010
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aww damn!!!!! i have the same issue. almost feel as if im spinning tires and then it catches and i take off. me and the mad scientist are going to have to take it apart and check the diff, thanks!!!

And here iw as thinking it had to much play.
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Old 08-30-2010, 12:17 AM   #8
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Just drained the diff and inspected the teeth . (Put the rear axle on jacks so the wheels would spin.) Used spray brake cleaner to get the teeth nice and bright. The old oil was black, dirty and piss thin. Cleaned the two mating faces up and tightened the cover down on going to opposite bolts each time. ( On fresh gasket sealant.) Then I refilled the diff with 75/90 using a large surgical syringe. (fFriends in nursing.) Went out and did a few figure 8 turns to get the oil in everywhere. Guess what ? Popping, clunking noise gone. Also had a chat with a jeep rebuild guy near me and he reckons there is always a little play in the axle shafts. Moral of the story: Do the maintenance before you start buying new diff parts. Thanks for all the guidance on the forum.
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Old 08-30-2010, 07:25 AM   #9
Join Date: Apr 2010
Posts: 440
^ i did the same thing, but i still have the pop here and there. Yours will come back too probably. The issue is not even broken teeth. It is that there is too much play in the carrier.
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Old 01-18-2012, 02:30 PM   #10
Join Date: Jan 2012
Posts: 1
i got an 06 wrangler x and mine does the same thing when in 4hi and 4lo. is there a way to perminently get rid of it w/o breaking the bank?

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clunk , pop , rear end

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