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differential or cv?

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Old 03-08-2011, 04:59 AM
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Default differential or cv?

went 4wheeling the other day i got stuck and i notice that my two front wheels are not moving just the rear. I manage to drive it home but its kind of stiff, grinding, knocking noise when turning and some low pitch noise while driving it. i call up the dealer and they say its the differential and i need to bring it in for them to test it out. if it is a cv problem I can do myself. Any idea what this can be?

95 grand cherokee 5.2l v8
Old 03-08-2011, 12:36 PM
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Originally Posted by eekorehc96
went 4wheeling the other day i got stuck and i notice that my two front wheels are not moving just the rear. I manage to drive it home but its kind of stiff, grinding, knocking noise when turning and some low pitch noise while driving it. i call up the dealer and they say its the differential and i need to bring it in for them to test it out. if it is a cv problem I can do myself. Any idea what this can be?

95 grand cherokee 5.2l v8
It could either be your transfer case or your front axle.
Old 03-08-2011, 01:09 PM
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Was the front DS moving when you were stuck?

Does it have a vacuum disconnect?

From my understanding we don't really have CV joints, they are all U joints.
Old 03-08-2011, 07:40 PM
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t case. u should have a dana 30 in the front and they dont go bad that often
Old 03-09-2011, 11:39 AM
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Originally Posted by GreenZJ94
u should have a dana 30 in the front and they dont go bad that often
Weird. My HP D30 is giving me problems.
Old 03-09-2011, 11:50 AM
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Originally Posted by Gee oh Dee
Was the front DS moving when you were stuck?

Does it have a vacuum disconnect?

From my understanding we don't really have CV joints, they are all U joints.

This is a ZJ not a XJ. Being the 5.2 it has CVs in the axle and the front driveshaft. Also there is no vacuum disconnect on the ZJs either. The XJ was plagued with that! Also, the ZJs have a lp D30. My guess is your NP249 crapped out the VC. Common problem on the 93-95s. U can swap out for a NP231 or a NP242 or you can replace the VC.
Old 03-09-2011, 11:54 AM
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Originally Posted by country_boy454
This is a ZJ not a XJ. Being the 5.2 it has CVs in the axle and the front driveshaft. Also there is no vacuum disconnect on the ZJs either. The XJ was plagued with that! Also, the ZJs have a lp D30. My guess is your NP249 crapped out the VC. Common problem on the 93-95s. U can swap out for a NP231 or a NP242 or you can replace the VC.
For the win!
Old 03-09-2011, 12:22 PM
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Originally Posted by country_boy454
This is a ZJ not a XJ. Being the 5.2 it has CVs in the axle and the front driveshaft. Also there is no vacuum disconnect on the ZJs either. The XJ was plagued with that! Also, the ZJs have a lp D30. My guess is your NP249 crapped out the VC. Common problem on the 93-95s. U can swap out for a NP231 or a NP242 or you can replace the VC.
Yeah, wasn't sure since it wasn't an XJ. Thats why I asked if it did have the vacuum disconnect.

Good to know!
Old 03-09-2011, 01:30 PM
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what's the issue with the vaccuum disconnect that you are referencing?
Old 03-09-2011, 01:40 PM
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Originally Posted by nickyd
what's the issue with the vaccuum disconnect that you are referencing?
On the cherokees they fail. Quit working. Not a problem associated with the grand cherokees.
Old 03-09-2011, 02:29 PM
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Originally Posted by nickyd
what's the issue with the vaccuum disconnect that you are referencing?
The front axle is a two piece unit. There is a small box on the back of the passanger side of the front axle, it uses vacuum to engage the front axles. If you lose vacuum to this, you lose 4wd.

Originally Posted by country_boy454
On the cherokees they fail. Quit working. Not a problem associated with the grand cherokees.
Because they don't have them?
Old 03-09-2011, 04:52 PM
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I began to have the same issue you mention. I have a '93 i6 limited and it started doing the same thing, but by the time I got home it was grinding every time I put power to it. I suspect its the VC like mentioned before. I am just going to swap the t-case as I have one on the ready because this seems to be a common problem.
Old 03-09-2011, 05:29 PM
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Originally Posted by Gee oh Dee
The front axle is a two piece unit. There is a small box on the back of the passanger side of the front axle, it uses vacuum to engage the front axles. If you lose vacuum to this, you lose 4wd.



Because they don't have them?
Grand Cherokees do not have vacuum disconnects!
Old 03-10-2011, 12:05 PM
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Originally Posted by country_boy454
Grand Cherokees do not have vacuum disconnects!
What do setup do they use instead?
Old 03-13-2011, 10:08 PM
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if my cv broke will my wheel spin? but the problem is that my driver side wheel are not spinning to, so im thinking t-case. forgot to mention its awd.


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