Rear end clunking sound diagnosis - JeepForum.com
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post #1 of 6 Old 10-29-2016, 04:52 PM Thread Starter
Ozarkirish87
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2005 WK 
 
Join Date: Jan 2015
Location: Ozark
Posts: 9
Rear end clunking sound diagnosis

Hello all,

I have searched a little and haven't found anything that appears to accurately describe what I'm hearing, so I thought I would post here to tap into the collective.

I have a 2005 WK 5.7L Limited with 110k. Purchased it a year ago with 92K on the odometer and have paperwork showing that the dealership replaced the differential bushings prior to resale (sorry if this isn't pertinent, just covering my bases).

I have a clunking noise that is rhythmic and related to vehicle speed while in gear. The faster I go, the faster the clunk. I jacked up the rear end and put it in neutral and spun both rear wheels...nothing. This noise is replicated in forward and reverse. It does not appear to be related to RPMs, as it does not get faster and then slow down once the rig up-shifts. It appears to be directly tied to velocity. I also crawled underneath and did not see any wear marks or anything that might suggest someone tied a zip tie or something around the drive shaft to mess with me.

Before I take it to a mechanic and risk getting ripped off (I'm not the most mechanically inclined), I thought I would get some of your thoughts. I have had friends of mine suggest either the fluid in the differential or in the transfer case, which probably need to be done anyway since I have no idea when those were done last. Anything else I should consider? Anything I can try and troubleshoot on my own?

Thank you in advance!

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post #2 of 6 Old 10-29-2016, 04:58 PM
takman
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Join Date: May 2016
Location: Mountain View CA
Posts: 170
damaged or missing tooth on the differential gears? take off diff cover and inspect?

make a video of it and post it here....that's what I do when I can't figure something out...
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post #3 of 6 Old 10-29-2016, 06:45 PM Thread Starter
Ozarkirish87
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Join Date: Jan 2015
Location: Ozark
Posts: 9
Thanks for the advice. I'll just have to take it to a shop then and hope they're honest. I will report back when I do in case any of you have had a similar issue.

It will be a few days before I can take it in, so more responses are definitely welcome!
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post #4 of 6 Old 10-31-2016, 08:00 PM Thread Starter
Ozarkirish87
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2005 WK 
 
Join Date: Jan 2015
Location: Ozark
Posts: 9
Ok, so I had some friends listen while driving back and forth in the driveway and we isolated the noise to the right rear wheel. We jacked it up and the lugs came off with just a socket and driver. In other words, loose as $%^$. Behind the wheel was a universal spacer that had been affixed using what appears to be thick grease. We put the wheel back on, tightened the lugs to spec and PRESTO...no more noise!

Apparently the wheel was so loose that the spacer was "falling" with each rotation and smacking into the lug stems. That was why it was a sound that was velocity related and didn't manifest itself when spinning in neutral while jacked up (couldn't spin the wheel fast enough to replicate).

Anyway, just thought I would post this update. The wheels haven't been off since I bought it from the dealership less than a year ago, but I'm thankful for the spacers because, without that early warning, most likely scenario would have been the wheel falling off while driving!

Thanks to all who viewed/replied!
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post #5 of 6 Old 11-01-2016, 03:34 AM
JeepWKWJ0006
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Join Date: Apr 2012
Location: Saint Louis
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That's good news!
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post #6 of 6 Old 11-05-2016, 01:30 AM
DavidGascon
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Join Date: Jan 2016
Posts: 29
Could be your parking brake pads? Basically you just have to pull off your rear rotors and if they fall out, that's probably the issue.
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