M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

ML320 - grinding noise

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Old May 15, 2011 | 05:06 PM
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ML320
Question ML320 - grinding noise

I hear a screeching noise when I hit 40km/hr but then it decreases as my speed increases, but then pops up again. It's getting louder and louder.
We thought it was the differential fluids, but not.
Anybody got any ideas?
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Old May 17, 2011 | 04:49 PM
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eclass's Avatar
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From: minnesota
1999 E320, 2000 ml430
rear driveshaft hanger bearing
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Old May 25, 2011 | 01:27 PM
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Originally Posted by eclass
rear driveshaft hanger bearing
Thank you.
Two mechanics could not figure it out.
So, I'm off to a third with some direction.
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Old May 27, 2011 | 08:04 PM
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From: middle o' ma
15 AMG S63 4-matic coupe
if they couldn't figure that one out you're going to the wrong mechanics.
it's a common ML trait. i have it done 3 times.
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Old May 31, 2011 | 09:38 PM
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1988 300E, 1994 E320, 1999 ML 320, 2002 SLK 32 AMG -SOLD-, ML 350SE -REPOSSESED-
Change the fluid in your transfer case! It takes about 1.8 quarts and is very simple then go from there...
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Old Jun 6, 2011 | 10:27 PM
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No, neither mechanic could figure it out, and both wanted to send me to transmission places. I was afraid to do that because I could just picture being told that I would have to take it all apart and cost a fortune ! Luckily, it was the rear driveshaft hanger bearing. Thanks for all your help everyone ! You saved me a lot of time, money and frustration !
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Old Oct 5, 2011 | 02:11 AM
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05 ML 350
I wonder if this is the issue I'm having also.
It only screeches when you accelerate right?
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Old Oct 12, 2011 | 07:54 PM
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1988 300E, 1994 E320, 1999 ML 320, 2002 SLK 32 AMG -SOLD-, ML 350SE -REPOSSESED-
Rear Drive shaft hanger bearing? Where is this located?

I havn't gotten the factory manual yet!
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Old Oct 13, 2011 | 05:33 PM
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From: VA
1988 300E, 1994 E320, 1999 ML 320, 2002 SLK 32 AMG -SOLD-, ML 350SE -REPOSSESED-
Its gotta be from the rear end for sure! Im working on so much other stuff that the other sounds are masking it...
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Old Oct 13, 2011 | 05:45 PM
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From: VA
1988 300E, 1994 E320, 1999 ML 320, 2002 SLK 32 AMG -SOLD-, ML 350SE -REPOSSESED-
This it!!!

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Old Oct 13, 2011 | 05:46 PM
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From: VA
1988 300E, 1994 E320, 1999 ML 320, 2002 SLK 32 AMG -SOLD-, ML 350SE -REPOSSESED-
Apparently the bearings wear out!
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Old Apr 10, 2012 | 01:29 PM
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Originally Posted by loclark757
Apparently the bearings wear out!
So that was it for you too ? So glad to have this forum !
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