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Old 09-12-2015, 05:10 PM
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Weird Rubbing Noise from Rear End

I have a weird rubbing/squeaking noise coming from the rear end area. Only makes the noise after driving for several miles. I hear it more when turning at slow speeds like into the driveway. The only way I can think to describe the noise is like rubber rubbing together.

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Old 09-16-2015, 04:29 PM
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Quote:
Originally Posted by justice22 View Post
I have a weird rubbing/squeaking noise coming from the rear end area. Only makes the noise after driving for several miles. I hear it more when turning at slow speeds like into the driveway. The only way I can think to describe the noise is like rubber rubbing together.
So my question is, does this sound usually mean my rear end is about to blow up and wheels fall off? Anyone else ever experience similar noise?

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Old 09-16-2015, 05:53 PM   #3
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There is a multitude of things that it could possibly be that is making the squeak.

If its a constant squeak, like you hear it over and over, then its most likely a u-joint in the rear driveshaft.

If its a once in awhile squeak like in a turn then it could be the brake shoes rubbing on the drum or a bearing starting to go out on one of the axles.

Hard to decipher with the little bit of info that you have given.
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Old 09-17-2015, 05:33 AM   #4
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Caveat: I'm a Jeep noob, but not to automotive mechanics/NVH (Noise, Vibration and Harshness) issues.

Any non-stock wheel offsets?

Checked rear diff fluid lately?

I'd try getting a large friend to ride in the back, and see if that changes anything.

Play with your e-brake when the noise happens, and see if it sings a different tune.

Likewise, try dragging the service brake, lightly, and listen for changes.

Similarly, throw it in neutral (and/or push in the clutch, if available) while it's happening (and if safe) and listen for changes.

Definitely need more info--pics might help the Jeep experts here, too.

(As the kids USED to say: "Get jiggy with it!) LOL

Good luck, you'll get there.

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Old 09-17-2015, 09:48 AM   #5
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If it's only when turning, could be tire rub?
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Old 09-18-2015, 09:16 PM
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This is what I do know: I can only hear it when I'm turning and doing circles in 1st gear. Forward and reverse. When I straighten the wheel it stops. It may make the noise at faster speeds but I can't hear it because of wind noise/mud tire noise. It's not tire rub. I don't hear it in neutral when I try to push it in circles. That may be because I can't push it that fast with the wheels turned. It has just recently began making the noise. Never heard it before. And it doesn't do it until after being driven several miles. The fluid in the differential is good and full. I do not feel any play at the drive shaft (u-joints). Is there a way to diagnose wheel bearings or pinion bearings without pulling axles and/or opening the diff and taking stuff apart. I've also heard stories of stuff breaking and axles sliding out while going down the highway. Should I be concerned with this?
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Old 09-21-2015, 08:14 PM   #7
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If it only when turning then it has to be related to the different axle speeds when one wheel is traveling a lot farther than the other. Does it make any difference which direction you are turning (right or left)?

You said there is no play in the U-joints and pinion but what about the differential?

Try getting the back end off the ground after the thing is warmed up, with the transmission in gear or park, engine off, rotate one back tire and listen for your noise. If you can't hear it, try turning the other wheel.

Generally gear noises do not sound soft, like rubber, but rather harsh and metallic but this test may help you identify if the problem is in one side or the other or in the differential pumpkin area.
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Old 09-23-2015, 08:43 AM   #8
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Shop for one of these--

It will pay for itself the very first time you avoid unnecessary repairs, and/or do your OWN diagnostics:

https://www.google.com/search?q=mech...w=1366&bih=608

Good luck.

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Old 09-23-2015, 09:31 AM
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Thanks guys. I will try your suggestions and see what I can find out.
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Old 09-23-2015, 08:36 PM
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Went out and drove the jeep 15 miles. Noise returned when driving slow and turning. Jacked the left rear tire up and spun it against the LSD and it made the noise. Jacked the right rear tire up and again it made the noise I'm hearing while driving. So I'm assuming it has something to do with the LSD. Any more suggestions or ideas from you guys would be appreciated. Thanks in advance.
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Old 09-26-2015, 09:33 AM
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Put new fluid in it, no more noise. Hmmm, problem solved I guess.
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Old 09-28-2015, 12:29 AM   #12
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Are you 100% sure the sound is from the rear? I know it sounds crazy but I had the same
Issue and swore the sound was from the rear but was actually the fan hitting the shroud just slightly when I made a sharp turn. You could see the wear plain as day when I looked on the right end LOL
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Old 09-28-2015, 10:05 AM
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Definitely sure it was the rear end. I was able to create the noise after warming it up a few miles and jacking one tire up and turning it. Continued to make the noise on the other side too when I jacked it up.

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