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Unread 02-20-2005, 05:57 PM   #1
Cougar Guy
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Join Date: Jan 2005
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Rear Wheel Vibration When Wheel Cranked . . .

Hi everyone,

We just noticed a noise coming from our 2002 Liberty. When the steering wheel is cranked way to the left, we notice a noise and vibration coming from the rear end. It almost sounds as though somthing is grabbing and the letting go and/or binding. When you hear the "let go" noise, you can feel a small vibration if your arm or hand is rested against the window frame. I got out and took a look while my fiance operated the vehicle (at very low speed . . . barely a crawl) and I could audibly hear the noise and noticed that the wheel and tire actually jerked a bit when it "let go". It doesn't roll smoothly. I should also add that 4WD is not engaged when this is occuring . . . we have the part-time 4WD system.

Any idea what this could be? I only seem to notice it during low speed operation where the wheel can be cranked enough to make tight turns. It also seems to be much more noticeable in reverse.

Thanks in advance!

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Unread 02-20-2005, 07:11 PM   #2
jeepom
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Join Date: Feb 2005
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Quote:
Originally Posted by Cougar Guy
Hi everyone,

We just noticed a noise coming from our 2002 Liberty. When the steering wheel is cranked way to the left, we notice a noise and vibration coming from the rear end. It almost sounds as though somthing is grabbing and the letting go and/or binding. When you hear the "let go" noise, you can feel a small vibration if your arm or hand is rested against the window frame. I got out and took a look while my fiance operated the vehicle (at very low speed . . . barely a crawl) and I could audibly hear the noise and noticed that the wheel and tire actually jerked a bit when it "let go". It doesn't roll smoothly. I should also add that 4WD is not engaged when this is occuring . . . we have the part-time 4WD system.

Any idea what this could be? I only seem to notice it during low speed operation where the wheel can be cranked enough to make tight turns. It also seems to be much more noticeable in reverse.

Thanks in advance!
The first night I brought the Libert home and backed it into the driveway I noticed that - I asked around and was told it was the torque converter and quite normal... Have you owned the Jeep long?
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[COLOR=DarkRed][SIZE=2][B]97 TJ - Totaled... :-(
05 KJ[/B][/SIZE][/COLOR]
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Unread 02-20-2005, 07:29 PM   #3
ZR7 Ken
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Quote:
Originally Posted by Cougar Guy
Hi everyone,

We just noticed a noise coming from our 2002 Liberty. When the steering wheel is cranked way to the left, we notice a noise and vibration coming from the rear end. It almost sounds as though somthing is grabbing and the letting go and/or binding. When you hear the "let go" noise, you can feel a small vibration if your arm or hand is rested against the window frame. I got out and took a look while my fiance operated the vehicle (at very low speed . . . barely a crawl) and I could audibly hear the noise and noticed that the wheel and tire actually jerked a bit when it "let go". It doesn't roll smoothly. I should also add that 4WD is not engaged when this is occuring . . . we have the part-time 4WD system.

Any idea what this could be? I only seem to notice it during low speed operation where the wheel can be cranked enough to make tight turns. It also seems to be much more noticeable in reverse.

Thanks in advance!
Sounds like a chattering trac-lok differential (if your KJ is so equipped).

Was the rear gear lube recently changed? If so, I'd suspect that the proper Trac-lok additive was not added.
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Unread 02-20-2005, 08:52 PM   #4
Cougar Guy
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Thanks for the responses,

Yes jeepom we have owned the Jeep since new . . . I just never noticed the noise before.

ZR7 Ken, yes we did have the lube in the front and rear differentials changed recently. It was done at the dealer so one would assume it was done correctly . . . but then again, you know what they say about assuming things

Sounds like perhaps I should take it in and get them to have a look at it.
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Unread 02-21-2005, 12:16 PM   #5
Cougar Guy
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Well I took it to the dealer today and got the "road tested and couldn't repeat problem" line. I did bring in the bill from my earlier service (front and rear diff fluid changes) and it did not show any charge for the additive. The service guy said that it would normally show up on the bill so he was thinking it wasn't added.

They apparently put some of the additive in this morning and they said that it could take a while for it to work itself in. They also said that if the problem persisted after about 120 miles of driving, to bring it back in for further diagnosis.

The service guy also advised me that a small amount of binding is normal, especially during turns where the wheel is cranked all the way to one side. Does this sound right? I know my truck with a limited slip rear-end does not exhibit any binding at all on tight turns unless 4WD is engaged (and then it is in the front-end) and I didn't notice any such issue with the Liberty until recently.

I'm really hoping that nothing was damaged as a result of the additive not being put in . . . it was only driven about 700 miles in total since the service.
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Unread 02-21-2005, 03:22 PM   #6
Detachable
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Watch your diff. If you are pushing over 20,00 and have never had it serviced, its time especially if you have the locking diff. Once the fluid breaks down a bit the chattering will come from the diff locking up prematurley. I had this same problem for a while and had no clue (the manual says to service the diff every 30,000 I was at 25,000, dealer recomends every 15), then I took it in because it was getting bad, and sure enough changed the fluid and hasn't done it since. It will eat your tires up too. I only exp this at full lock, but later on it started chirping the tires on some corners.

good luck!
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Unread 02-21-2005, 06:05 PM   #7
Cougar Guy
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Thanks for the response Detachable. We actually did have the fluids changed in the front and rear differentials about a month ago so they should be fine. I'm thinking they just forgot to put the special additive in when they changed the fluids.

Like I said, they advised me that they put some additive in today so we'll see how the Jeep responds in the next few days or so. They said it could take a bit of time for the additive to work itself in. Hopefully that cures it.
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Unread 02-21-2005, 07:29 PM   #8
EdgarNYU
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DIFF FlUID CHANGE

If I may jump in, If I am in NYC/NJ with mostly local traffic and some stop and go traffic, should I do my diff if I reached 17Kalready in 10 months? My service guy said it doesn't really have to be done til 30K.

It's not HIS jeep though.

Edgar
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Unread 02-22-2005, 01:44 PM   #9
Cougar Guy
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Hi EdgarNYU. We changed ours at 40,000 kilometers which works out to roughly 25,000 miles. This is based on the service schedule we are following in our owner's manual for "severe duty" or whatever they call it. Basically when there are lots of shorter trips, operating in colder temps, etc.
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