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Old 07-11-2011, 10:25 AM   #1
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Humming/vibration

I have a slight vibration/humming coming from the drive train. It's not a grinding sound and when I let off the gas it goes away. I have changed the gear oil in both diffs and just put on new firestone destination a/t tires which are the quietest tire I've ever owned. My old dueler at revos were so noisy you could barely hear someone talking while going down the road at 55. Now it so quiet I can hear and feel a slight humming. Is this normal for jeeps due to the 4 wheel drive system?

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Old 07-04-2012, 08:15 AM   #2
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i have the same humming and vibration i changed out the u joints on rear drive shaft and still a slight hum im at a loss.if i find anything out ill let u know and let me know if find anything out

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Old 07-04-2012, 09:23 AM   #3
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Is it an auto by any chance?
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2003 Wrangler Sahara 4.0 42rle D30/D44
Front: 2" BDS coils + JKU shocks
Rear: 2" BB + Zone Nitro shocks
Zone 1.25" BL + 1" MML, UCF LoPro
32" BFG AT on 16" Racing Hart
Ramsey Pro Plus 6000, IPF 900s 130W
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Old 07-05-2012, 10:53 AM   #4
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My 2005 Unlimited is doing the same thing at 40 mph. Slight humming and vibration. Goes away when I let off gas or accelerate. Mine is the 4 speed ultra overdrive tranny.
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Old 07-05-2012, 02:00 PM   #5
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Quote:
Originally Posted by Jmaddox22472
My 2005 Unlimited is doing the same thing at 40 mph. Slight humming and vibration. Goes away when I let off gas or accelerate. Mine is the 4 speed ultra overdrive tranny.
That is why I asked. From what I can gather the 42rle auto box does that when the OD kicks in.
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2003 Wrangler Sahara 4.0 42rle D30/D44
Front: 2" BDS coils + JKU shocks
Rear: 2" BB + Zone Nitro shocks
Zone 1.25" BL + 1" MML, UCF LoPro
32" BFG AT on 16" Racing Hart
Ramsey Pro Plus 6000, IPF 900s 130W
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Old 07-05-2012, 02:19 PM   #6
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It is annoying as hell. Anyway to get rid of it?

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