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Unread 11-02-2009, 08:28 AM   #1
sethfosho
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99 WJ Transmission or Qudra Drive issue?

I have a 99 WJ, bought it like 5 or 6 weeks ago. Drove and ran perfect while test driving. About 2 weeks ago i started noticing when i turned sharp or did a u turn it would start jerking and acting like 4 wheel drive does, now it does it more often and even when turning normally...what could this be? probably bad news..the dealer did say they had recently rebuilt the rear end. not really sure what all that includes or if this could be the issue. any help is much appreciated.

thanks

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Unread 11-02-2009, 10:17 AM   #2
Double E
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Sounds like the rear needs to be looked at again. Was friction modifier added, did they make the required shim adjustments with plasti gage? Lots of questionsd to answer.....

Ask them what exactly did "rebuild" mean? It might have been just an axle seal replaced. (common issue)

If they did the work shortly before you purchased, the work should be warrantied what ever it was.

Can you confirm that the rear wheels are the ones binding? If so, you have a real case to bring it back...and probably a real short time before there's bigger issues. If you wait too long, there may be a case of neglect on your part that could release them from fixing it.
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Unread 11-02-2009, 10:41 AM   #3
sethfosho
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i would say that the rear wheels are whats binding. its makes a horrible noise. i doubt that they would fix it for free tho..i guess i can take it up there and have them check it out...
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Unread 11-02-2009, 11:30 AM   #4
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what about friction modifier? or something like that?
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Unread 11-02-2009, 11:33 AM   #5
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Was this a jeep dealer or what?

If you have quadradrive, you need FM in the F and R diffs. See if they put it in there.

For you I would say, just take it in and have them figure it out. They should pay.
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Unread 11-02-2009, 11:35 AM   #6
sethfosho
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nah, it was just a used car dealership
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Unread 11-02-2009, 11:36 AM   #7
99avant
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Then I would bet they did not put the FM in there.

It is ~15$ at the dealer, and it takes less than 5minutes to put in...
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If it aint broke, fix it till it is.
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Unread 11-02-2009, 11:40 AM   #8
sethfosho
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ok, does it matter which transfer case or transmission or anything like that?
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Unread 11-02-2009, 12:11 PM   #9
rm2001wj
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It might matter. Why don't you say what engine (that would also determine the transmission), and what the emblem on the transfer case shift bezel says? If you really have Quadra-Drive, there will also be an emblem of the lift gate.
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Unread 11-02-2009, 02:22 PM   #10
sethfosho
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i have the regular 4.7V8...the TC says 247
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Unread 11-02-2009, 04:01 PM   #11
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I asked because the title of your first post said "Qudra Drive" and it wasn't clear (and still not clear) that you have Quadra-Drive. The NV247 could mean that you have Quadra-Trac II or Quadra-Drive. If QD, there should be a "Quadra-Drive" emblem on the transfer case bezel around the shift handle in the cabin. There should also be a "Quadra-Drive" emblem on the lift gate. The difference between QTII and QD is that QTII has open differentials while QD comes with Vari-Loc (a type of limited slip) differentials at the front and rear.

Your sounds could originate in the NV247 and travel to the rear end with either QTII or QD. Since your WJ came from a used car dealer, I would guess that the lube in your NV247 is an ATF of some type. That works for a while, but sooner or later clutch chatter will occur in the NV247. The correct lube is Mopar NV247 transfer case lube found only at a dealership. I suggest that you replace the lube with Mopar lube. Even after that is done, it will probably take a while for the NV247 lube to work its way into the clutch pack so the sounds might not go away immediately.

If you have QD, it's important to know that the differentials need a friction modifier added to the gear lube. Without the FM, clutch chatter is guaranteed to occur. Since you don't know much about the history of your WJ, it wouldn't hurt to go ahead add 4 oz of FM to the rear differential if changing the TC lube doesn't help. You will probably have to remove some of the original lube in order to make room for the FM. As with the TC, it may take a while for the FM to work its way into the clutch pack and quiet things down.

If you have QTII, and if changing the TC lube doesn't help, then there is probably a problem with the rear end.
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Unread 11-03-2009, 09:33 AM   #12
sethfosho
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yeah it is def the quadra-drive. thanks for all of the help. i think i am going to take it to the jeep dealership to have the TC and diffs serviced
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Unread 11-03-2009, 09:38 AM   #13
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Getting the diffs and TC serviced correctly is an excellent idea.
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Unread 11-05-2009, 08:33 AM   #14
sethfosho
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i went and got my diffs and TC serviced. they said that the front diff was dry, the back and the TC looked like they had never been changed. so far so good, seems to be working great. thanks for all of the help!
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