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Unread 10-05-2013, 09:32 PM   #1
COL
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2000 WJ 
 
Join Date: Sep 2013
Location: brainerd, MN
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Wj Somebody Please Help Me find my Rattle/Clunk

Just about every bump I hit that is any more than a sealed crack in the concrete I get this annoying rattle/clunk. I can not seem to find this rattle anywhere! I have been looking for awhile now and even had the jeep up on a lift and still have no luck. The noise sounds to me like it is coming from the rear but it is hard to tell. I also can kid of feel it in front of my driver seat in the floor, but again im unsure if you can feel it throughout the whole vehicle or not. Also all noise goes away with the light application of the brakes. It doesn't have to be much brake pressure at all. Jeep is still on factory shocks if you guys were wondering.

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Unread 10-05-2013, 10:30 PM   #2
Redrum_1
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Location: Indiana, Pa.
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There's a ball joint on top of the rear differential. Check that first. If that's tight look at your shock bolts. Those are the two main places on a WJ.
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Unread 10-05-2013, 11:11 PM   #3
COL
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How do you check that ball joint, and if it is bad how do you replace it. That ball joint looks like a real PITA
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Unread 10-05-2013, 11:15 PM   #4
DennisT
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I had NO idea there was a joint of any kind above the rear dif. We've had a clunk from the rear and have looked for it for 5 years. Even two mechanics couldn't find it. In our case, it sounds like a loose rear hatch, "thumping," but it isn't.

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Unread 10-05-2013, 11:17 PM   #5
DennisT
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Back again. Wait a minute: is the Grand Cherokee the only one with this joint? Do standard, (XJ), Cherokees have the same thing?

Dennis
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Unread 10-05-2013, 11:36 PM   #6
COL
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im pretty sure the upper arm and ball joint is a WJ thing only. I kinda wish you could just take it out and leave it out.
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Unread 10-06-2013, 12:07 AM   #7
Redrum_1
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Its a WJ thing only. On mine I changed out the shocks then the noise started. I first replaced the ball joint no help. Next I disassembled the whole
Control arm and replaced everything. Still no help. I checked the shock bolts and noticed a shoulder worn on one. I got metric bolts and replaced them. Finally! Peace and quiet going down the road. Try it you might like it!
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Unread 10-06-2013, 08:51 PM   #8
Jer25
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I've had an rattle, noise since I bought mine 4 years ago. Sounds like a snapple bottle in under the back seat or something. It is't always there, but ofter enough that it drives me f'ing nuts. I've taken it to a few different mechs, including a transmission specialist and none could tell me what it was.
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Unread 10-07-2013, 10:20 PM   #9
WJ02FNG
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My clunk turned out to be a loose lower control arm bolt in the rear. Your description is exactly the same issue I had.
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Unread 11-18-2013, 03:09 AM   #10
iDrum85
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Join Date: Sep 2011
Location: Manchester, NH
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I have the same rattle, from what appears to be the left rear brake. It goes away when braking. I'm curious guys, how could a ball joint rattle or a lower control arm rattle be affected by even light pressure on the brake? I'm going to pull my left brake apart this weekend and see if it's the pad rattling. I'm just curious if I'm being a noob and not understanding some sort of pressure the ball joint or the control arm may be under when even slight pressure is applied to the brake.
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Unread 11-18-2013, 05:40 AM   #11
Epdog
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Red rum what size metric bolts did you use?
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