Rubbing, grinding sound from rear?

Heidenspass

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Nov 3, 2016
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Austria
I’m having this awful grinding, kind of rubbing sound that is coming from the rear when I slowly drive off or go in reavers. Once up to speed it seems to stop. I’m wondering if it is the wheel bearings, or the driveshaft, axel??? Does anyone have an idea what this might be? How expensive to fix. And is it dangerous to drive? I’ll post a little video soon to better explain what is going on.
 
Does it happen when you apply the brakes? Or does it go away when the brakes are applied?
 
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I would look at the rear end. As you take off and go in reverse it changes angle and it may be telling you that it is moving or at a bad angle.
 
Does it happen when you apply the brakes? Or does it go away when the brakes are applied?
That was my first thought. Rear brake issues.

Pull the rear brakes apart and check them out, or have a mechanic do so.
 
Try it out. If it happens when you apply the brakes, it's clearly brake related. I say that because often times these rear drums can get rusty, or the brake shoes may have no life left on them, and then it's metal on metal!
 
here is a little video to try and show better what I'm hearing. I was going up a hill and also taking a right turn, whilst in first gear. As you can notice once I get up to speed a bit, the sound stops.
 

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What may be changing angles as I take off or reverse?
When you Jeep is not moving the axle is at a resting position. As you apply torque it will flex down or up depending on which direction you are going. I'm not talking about a lot of flex but it will flex some. This can cause your drive line not to be at the correct angel and may cause issues with your rear end. Have you had a lift installed or made any adjustments to your control arms?
 
When you Jeep is not moving the axle is at a resting position. As you apply torque it will flex down or up depending on which direction you are going. I'm not talking about a lot of flex but it will flex some. This can cause your drive line not to be at the correct angel and may cause issues with your rear end. Have you had a lift installed or made any adjustments to your control arms?
Yea, I have a 2" OME suspension lift. I had it put on about a year and a half ago. It sat for awhile but I think it was doing that before the lift. It needed new u-joints up front, then what I assumed to be the noise. How can I check to see if it is coming from the drive, and how do I best go about fixing it? Thanks for your response.
 
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Yea, I have a 2" OME suspension lift. I had it put on about a year and a half ago. It sat for awhile but I think it was doing that before the lift. It needed new u-joints up front, then what I assumed to be the noise. How can I check to see if it is coming from the drive, and how do I best go about fixing it? Thanks for your response.
Start by checking all connections to your axle. Check your upper and lower control arms for loose bolts or bad bushings. Then disconnect your driveshaft and check for any issues the seal and pinion for wear or if it's loose.
 
@Heidenspass, did you ever figure out what it was? I watched your video and mine started doing this exact same thing today. I'm kind of flipping out!
Mine was doing the same as the video. I took to the shop and they took the cover off of the rear end.... found a chunk of metal floating around. Ended up having new gear and pinion and seals installed. $1300.00
 
Has anyone in this thread figured out what that noise is? My TJ just started making this exact noise and I can’t track it down.