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Old 12-31-2007, 07:05 PM   #1
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I need some Jeep guys help.

I need some Jeep guys help.
I just purchased a 04 Jeep Wrangler. It is setup with the following, a 4-inch lift, 32x11.5x15 LT tires, 4.0l inline 6 and the automatic transmission.
My concern is I have noticed a vibration / hum sound when the transmission shifts into overdrive, usually around 55 MPH. I took it back to Hunter Dodge and they say it is caused by the lift and the big tires. Has anybody experienced this problem?

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Old 12-31-2007, 09:52 PM   #2
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yes i have lifted several rigs & vibrations are in herent ,one thing that can help is to repitch your pinion angel , but be carful this can cause you 2 have bering issues later on

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Old 12-31-2007, 11:22 PM   #3
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Thanks for the feedback...
I was thinking it could be in the Torque converter, since it only does it in overdrive. I was thinking about putting it up on blocks, straping it down, and running it.
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Old 01-01-2008, 12:39 AM   #4
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nahh you just need a transfer case drop, you can buy them or you can get longer bolts and washers to drop the transfer case and get a better driveline angle
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Old 01-01-2008, 11:10 PM   #5
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Originally Posted by debruins View Post
nahh you just need a transfer case drop, you can buy them or you can get longer bolts and washers to drop the transfer case and get a better driveline angle
X2 sounds like that is your problem, not a hard fix either.
Welcome to the forum by the way...
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Old 01-02-2008, 12:47 AM   #6
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first do you have a transfer case drop already?
and do you have a SYE ''slip yoke elimator"?
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Old 01-02-2008, 01:07 AM   #7
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good point distj I overlooked his 4" of lift...
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Old 01-04-2008, 11:37 PM   #8
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Mine did that even after SYE. I had read that it is an issue of the stock t-case skid, but it still did it after my TT.
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Old 01-05-2008, 11:27 PM   #9
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mine was because i had a rock the size of a softball jammed under the xfer case. i really need to get a lift.

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