W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Transmission thump

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Old Feb 16, 2009 | 12:38 PM
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2003 W211 E55, 2003 W220 S600
Transmission thump

When the car is cold, I get a thump when I shift into reverse or drive.
Also in 3 gear when I gently press on the throttle I get a vibration comming from the drive line. Could this be transmission mounts going or a flex disc going bad.
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Old Feb 16, 2009 | 01:28 PM
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It's the diff.

Oh yeah... or water in the Tranz.

Last edited by Finny; Feb 16, 2009 at 01:31 PM.
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Old Feb 16, 2009 | 01:39 PM
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it absolutely could be the transmission mounts. i had similar problems after someone at the dealer forgot to tighten all 6 of the crossmember bolts down on my car. it's any easy place to start so check them asap!
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Old Feb 16, 2009 | 01:41 PM
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Originally Posted by Finny
It's the diff.

Oh yeah... or water in the Tranz.
wow how can water get in the transmission.
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Old Feb 16, 2009 | 01:42 PM
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Originally Posted by chiromikey
it absolutely could be the transmission mounts. i had similar problems after someone at the dealer forgot to tighten all 6 of the crossmember bolts down on my car. it's any easy place to start so check them asap!
will check them asap.
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Old Feb 16, 2009 | 01:53 PM
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Originally Posted by shardul
wow how can water get in the transmission.
there was a known problem with coolant lines leaking into the trans on older models.
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Old Feb 16, 2009 | 01:58 PM
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Originally Posted by chiromikey
there was a known problem with coolant lines leaking into the trans on older models.
Physically can I check this?
As far as I know my car is not leaking any fluids. Coolant level is constant.
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Old Feb 16, 2009 | 07:22 PM
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Originally Posted by shardul
wow how can water get in the transmission.
Internaly through the radiator core.

There will be no sign of leaking so you will need to check the tranz oil color by using a dip stick tool or undo the tranz sump and get a sample from there.

If your under warranty, no probs... if not, then get ready to get ripped a new one.
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Old Feb 16, 2009 | 07:27 PM
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On the opposite side, is it normal to see oil floating in the radiator reservoir?
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Old Feb 16, 2009 | 07:30 PM
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Originally Posted by jangy
On the opposite side, is it normal to see oil floating in the radiator reservoir?
i think you know the answer to that...
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Old Feb 16, 2009 | 07:42 PM
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Originally Posted by jangy
On the opposite side, is it normal to see oil floating in the radiator reservoir?
No... that doesn't appear to be healthy but could it be due to after market additives.

If there is frothing in the water, a whitish brownish color then it's hit the fan.
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Old Feb 16, 2009 | 08:07 PM
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I didn't think it was either, but a number of cars at Famosa had some drops of oil floating at the top when the radiator cap was removed. It wasn't a load, but like a mL max.

Mine is clean but I wondered if it is something that comes with age...
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Old Feb 16, 2009 | 08:55 PM
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Originally Posted by Finny
Internaly through the radiator core.

There will be no sign of leaking so you will need to check the tranz oil color by using a dip stick tool or undo the tranz sump and get a sample from there.

If your under warranty, no probs... if not, then get ready to get ripped a new one.
Thanks finny. What color of fluid should I be looking for, if there is water/coolant in the tranny. Also what is the color of regular fluid.
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