Weird whining noise after lift
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JK Enthusiast
Joined: Jul 2010
Posts: 209
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From: Morgantown, WV
Weird whining noise after lift
Just installed a 6 inch rough country long arm on my rubicon and installed new rough country drive shafts. Today I just got a real loud whining noise when I'm moving. When I stop the noise stops. Didn't do it until today. My guess is the driveshaft but I may be wrong. Anyone have any ideas or experience on this issue??
JK Freak
Joined: Nov 2013
Posts: 577
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From: Colorado
Just installed a 6 inch rough country long arm on my rubicon and installed new rough country drive shafts. Today I just got a real loud whining noise when I'm moving. When I stop the noise stops. Didn't do it until today. My guess is the driveshaft but I may be wrong. Anyone have any ideas or experience on this issue??
Thread Starter
JK Enthusiast
Joined: Jul 2010
Posts: 209
Likes: 1
From: Morgantown, WV
JK Freak
Joined: Nov 2013
Posts: 577
Likes: 1
From: Colorado
With drive shaft as close as possible to avoid vibration if not you could damage
Transfer case. This is done with Adj control arms upper or lower , witch with that
Tall of lift I assume you have right...?
Thread Starter
JK Enthusiast
Joined: Jul 2010
Posts: 209
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From: Morgantown, WV
With after market Drive shafts your pinion with the yoke on it needs to be lined up With drive shaft as close as possible to avoid vibration if not you could damage Transfer case. This is done with Adj control arms upper or lower , witch with that Tall of lift I assume you have right...?
Yeah it does.
Thread Starter
JK Enthusiast
Joined: Jul 2010
Posts: 209
Likes: 1
From: Morgantown, WV
Alright so I'm not very knowledgable on drive shafts. First time I put them on since my last jeep only had a four inch lift. I took some pictures. Maybe that will help. I'll try to get a video. Their is a consent by subtle whining noise but then a random loud whine will occur but stop.
Last edited by Randonizer; Nov 20, 2014 at 12:57 PM.
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
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From: Austin <--> Colorado Springs
Lol - pics of the components, not the jeep. The control arms, one at the pinion end of the driveshaft and one at the tcase end of the driveshaft. (so we can see the angles they sit at.)
The problem up front is that pinion angle is directly tied to caster angle. As the pinion tilts up, the caster lowers, and the handling gets flighty. As you lift higher, you get into a situation where you have to start deciding between good pinion angles (driveshaft joints) and good caster (steering). At 6", it can be an interesting choice.
Have you crawled underneath and actually looked at the driveshaft? Did you install it yourself? If so, did you torque the pinion nut properly? If you push/pull up and down on the pinion, does it move? Have you tried pulling it off and driving without it? You can do the same for the rear to eliminate it.
The problem up front is that pinion angle is directly tied to caster angle. As the pinion tilts up, the caster lowers, and the handling gets flighty. As you lift higher, you get into a situation where you have to start deciding between good pinion angles (driveshaft joints) and good caster (steering). At 6", it can be an interesting choice.
Have you crawled underneath and actually looked at the driveshaft? Did you install it yourself? If so, did you torque the pinion nut properly? If you push/pull up and down on the pinion, does it move? Have you tried pulling it off and driving without it? You can do the same for the rear to eliminate it.
Last edited by nthinuf; Nov 20, 2014 at 01:06 PM.
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JK Jedi Master
Joined: Mar 2007
Posts: 14,800
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From: Midwest City, OK
Do this. Pulling the front driveshaft is what isolated a chirping birds sound for me this past summer while in the Great Smokies. If you pull the rear, drive around in 4WD (effectively front wheel drive). Are the driveshafts lifetime lubed? If not, did factory lube them?
