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Unread 02-02-2013, 07:22 PM   #1
jeep93zj
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1993 ZJ 
 
Join Date: Aug 2012
Posts: 190
metal on metal sound coming from the rear of my jeep

There is a metal on metal sound coming from the rear. It sounded like the gears were going bad so I put new gears in it today and the sound is still there I can't figure it out. It is loudest when I'm pressing the gas. I can't figure it out. Thanks in advanced for the help.

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Unread 02-02-2013, 07:42 PM   #2
SAR-Swimmer
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1997 ZJ 
 
Join Date: Apr 2009
Location: Mission, B.C. Canada
Posts: 756
Brakes hanging up, or bearings going bad, would be my guess.
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Unread 02-02-2013, 07:52 PM   #3
newfieZJ
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1995 ZJ 
 
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Bad e-brakes or pinion/carrier/axle bearing . From what you say , pinion is my thought .

What gears ? C&P or spider ?
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Unread 02-02-2013, 07:58 PM   #4
jeep93zj
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I just put a Detroit true track in, and all new bearings and a new ring and pinion gear.
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Unread 02-02-2013, 08:41 PM   #5
newfieZJ
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Quote:
Originally Posted by jeep93zj View Post
I just put a Detroit true track in, and all new bearings and a new ring and pinion gear.
That's a tough one . Did you check the u-joints . I'm doubting you missed much connected to the diff rebuild . Everything I can think of was exposed during the work , u-joints , having to pull the axles . The e-brakes were also in plain view .

You did the side axle bearings also ? Just confirming

Times like this you need those "mouse" ears . They stick on parts(magnet) and measure noise levels .
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Unread 02-02-2013, 09:03 PM   #6
jeep93zj
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1993 ZJ 
 
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Yes replace all bearings and about A month ago I replaced all my u joints on both front and rear drive shafts. And after I was done I cleaned and adjusted the teaser breaks. And is been making this noise for a while now.
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Unread 02-02-2013, 09:16 PM   #7
4Slow9erHybrid
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1997 ZJ 
 
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Location: Hopkinton, MA
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Is it lifted?
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1997 JGC Laredo 4.0 4x4 99900mi * 0W30 German Castrol since 75k * 225/75/R15 Firestone Destination AT on Ravine rims * winter 235/75/R15 Bridgestone Blizzak DM-V1 * UC suspension * Monroe Reflex Monotube shocks * factory skids * KOR steering brace * rear Addco SB * Magnaflow cat and cat back system * complete 5.9 interior
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Unread 02-02-2013, 09:23 PM   #8
jeep93zj
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Yes it is 3.5 inches
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Unread 02-02-2013, 09:25 PM   #9
4Slow9erHybrid
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Pinion angle adjusted within 1 degree?
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1997 JGC Laredo 4.0 4x4 99900mi * 0W30 German Castrol since 75k * 225/75/R15 Firestone Destination AT on Ravine rims * winter 235/75/R15 Bridgestone Blizzak DM-V1 * UC suspension * Monroe Reflex Monotube shocks * factory skids * KOR steering brace * rear Addco SB * Magnaflow cat and cat back system * complete 5.9 interior
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Unread 02-02-2013, 09:34 PM   #10
jeep93zj
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It was lifted when I got it and it was not making the noise when I got it.
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Unread 02-03-2013, 06:56 PM   #11
jeep93zj
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Bump
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Unread 02-04-2013, 05:54 AM   #12
Rich93ZJ
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1993 ZJ 
 
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when I lifted mine, my sway bar links were hitting the inside of the wheel until i got my t/b installed...Maybe something to look at
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Unread 02-04-2013, 08:04 AM   #13
jeep93zj
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I have 3.75 offset wheels so it won't do that. I can't figure this noise out.
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