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Old 02-13-2013, 12:55 PM   #1
BamaRolln's Avatar
Join Date: Jul 2012
Location: Oak Mtn Area (Bham, AL)
Posts: 200
Roaring noise - vibration

From the time I bought this 2005 4.0 auto this summer (50k miles, currently 52k) I had a faint "noise" for the lack of better description that I could sorta feel at around 45-55 mph. I noticed that if I turned off the overdrive it went away.

A month or two ago had the spacer lift off that was on when I bought it taken off and changed to springs and put on bilstien 5100s. It was about the same height, maybe a hair higher than the spacers.

At this point I had a vibration/noise that was enough to make the dash rattle from about 5 to 15 mph. When I took the jeep back in for the re-torque and check I had them check it out and they said it needed a transfer case drop kit. So I had them do that and sure enough, the 5-15 mph issue went away.

But now the noise/vibration is worse at 45-55 mph. Its not a strong vibration but its a fast one,,, its like an electric razor or something and it sorta oscillates.... wah wah wah wah wah wah and still stops if I turn off the OD.

Is this a sign the OD is about to cause problems or is it the entire transmission, is it because of the lift, the transfer case.

I'm going to take it back to the shop because I'm no mechanic, but I wanted to get some feedback from everyone here.

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Old 02-13-2013, 01:26 PM   #2
cctriesch's Avatar
Join Date: Mar 2012
Location: Texas
Posts: 482
Whatever it is it does not sound good. Do you think it is due to high angles in your driveline?

Btw, Roll Tide

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Old 02-13-2013, 01:33 PM   #3
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Join Date: Dec 2012
Location: Long Beach, Mississippi
Posts: 2,077
It could possibly be a bent or out of balance rod/shaft in the driveline. Anywhere between the engine through the driveshafts possibly. Just shooting in the dark. Definitely not gonna be fun. Good luck. Let us know when you figure it out. Hopefully someone with lots of knowledge will chime in.
1998 TJ, 2.5" OME springs, OME N66 & N67 Sport Nitro Shocks, 33x12.5 Goodyear MTR's, Metalcloak front trackbar, JKS rear trackbar, Metalcloak aluminum front arched fenders, Metalcloak aluminum front bumper, thedirtworx tire carrier, Warn xd9000i w/ synthetic line and TRE Safety Thimble II, Monstalined interior
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Old 02-13-2013, 03:16 PM   #4
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Join Date: Jul 2012
Location: Oak Mtn Area (Bham, AL)
Posts: 200
I thought this didn't post and I had to retype the whole thing so just ignore this one thread.

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