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Old 07-12-2010, 03:23 AM
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Join Date: Oct 2002
Location: Australia
Posts: 44
215 CL500 Humming noise

Cl 500 has a humming noise at low RPM but is not there with the drive belt removed. The noise is most noticeable when coasting at low speeds and revs.
The car has only 80.000km on the clock. Any help on this problem would be most appreciated. Thank you.

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Old 07-12-2010, 08:26 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Here in the USA, all C215 chassis have ABC hydraulic suspension systems.

Bulletin on ABC pulsation damper causing noises up to approx 2500RPM.
Very common issue. Not that $$ here.
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Old 07-12-2010, 05:28 PM
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Join Date: Oct 2002
Location: Australia
Posts: 44
ABC pulsation damper

Hi Doc, may I please have a copy of the Bulletin on the pulsation damper issue

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