4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

loud rearend noise......kinda scary

Old 12-03-2006, 05:17 AM
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travisl1213
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Default loud rearend noise......kinda scary

just started a few mins ago, on take off slight rough shaking coming from the rear, when i go to make a turn then its a loud rubbing noise kinda like a grind. i know its from the back but thats all i can tell. nothing looks bad or loose. any ideas?
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Old 12-03-2006, 10:21 AM
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Mark99GT
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Default RE: loud rearend noise......kinda scary

Does it make the noise at higher speeds around corners under acceleration? Can you still leave posi strips? I had the same symptoms you describe, grinding and such. My diff is on its way out. Had metal pieces in the diff fluid. A simple fluid change made the noise go away completely though. I'd definitely try changing the fluid. While you're at it, get a diff cover with a fill and drain plug, makes the job easier in the future.
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Old 12-03-2006, 11:13 AM
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stang2000
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Default RE: loud rearend noise......kinda scary

I"ve got a new eaton 31 spline diff and new moser 31 spline axles for sale if you need!
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Old 12-03-2006, 11:49 AM
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fishyducky
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Default RE: loud rearend noise......kinda scary

+1 mine makes some noise too, i replaced the fluid and it went away and i had a small amout of metal shavings in the rear end. im replacing everything back there this christmas tho so im still running the heck out of it.
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Old 12-03-2006, 01:17 PM
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96cobra10101
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Default RE: loud rearend noise......kinda scary

make sure your fluid didn't leak out.
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Old 12-03-2006, 02:33 PM
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travisl1213
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Default RE: loud rearend noise......kinda scary

well i hit a whole in the road last night and its just a loud noise that sounds like something is going to break. i had my rearend rebuilt about 10000 miles ago.
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Old 12-03-2006, 05:02 PM
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Default RE: loud rearend noise......kinda scary

drove it to work today about 8 miles and it drove great and no noise at all..... weird.. any ideas of something to check
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Old 12-03-2006, 10:50 PM
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Default RE: loud rearend noise......kinda scary

bump
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