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Mater30 04-24-2012 10:44 PM

Grinding from noise
From a stop there is no noise. When accelerating there is no noise. When I am going slow, I can hear a grinding, almost like metal on metal. I thought it was a loose brake pad. So I replaced them and the noise is still there. When I am going at a slow speed it is grinding. It gets real bad when I am breaking or turning right. However if I turn left, the noise goes away. When I am going faster then 35-40, the noise is very faint. However if I hit a bump at 35-40 I can hear the grinding momentairly.

My first thought was transfer case but why would the noise go away when I turn left?

Frango100 04-25-2012 06:51 AM

Re: Grinding from noise
Welcome to the garage.
Sometimes grinding noises are caused by a small stone or other road dirt which got stuck between a brake disk and the back plate, but since you replaced the pads you would probably have seen that.
Also grinding noises can come from wheel bearings, CV joints or the differential. I would check the diff fluid for metal particles and level. You could jack up one side at a time and turn the wheel by hand and feel for play, however a bad bearing many times still seems to be ok doing this.

Mater30 04-25-2012 05:45 PM

Re: Grinding from noise
First off, thank you for responding. I love these forums already. I spent quite a bit of time reading through them yesterday.

I already checked the bearings, going to be checking the u joints, cv joints and differential today.

I just am getting really confused on why the sound goes away when I turn left.

cheapjeep 04-25-2012 07:20 PM

Re: Grinding from noise
First thing I would check are the dust shields. They are easy to bend out of place and get too close to the rotors.

Mater30 04-26-2012 08:31 PM

Re: Grinding from noise
Ok...So I gave up and gave it to another mechanic as I could not stand it anymore and needed someone else to think differently then me. He and his son looked at it, could not figure it out. He took it to a transmision shop, they could not figure it out. I kept researching the internet and after 10 hours I came across someone that had something similar to me.
Their fix also fixed mine. We were so hell bent that it was something mechanical that we overlooked the obvious. The Quadr Trac transfer case cable has a clip that hold the cable up. The clip broke and was rubbing on the drivetrain. When we where lifting the jeep up, the drivetrain would of course drop down, not showing us it was rubbing. So I zip tied it back up and the noise went away.
This noise should never sounded so intense, but it did.

Frango100 04-27-2012 03:57 AM

Re: Grinding from noise
Its sometimes amazing how noise can propagate and let you look into a certain direction. Good to know it was a simple fix.

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