Idler pulley rattle
01-04-2009, 08:46 PM
#1
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2007 S600L
Idler pulley rattle
I drive a 2007 S600L with only 12000 kilometres on the odo, it recently started after about 20 min running a rattle from what appears to be the front of the engine. could it be an idler pulley or belt. Has anyone had a similar ploblem
01-04-2009, 10:00 PM
#2
It has a very high probability of happening. My upper right pulley went bad after 18000 miles and it seems to happen only on S600s as far as I know. When they replaced the pulley, they also replaced a connecting part also that had to be modified. Apparently this is a known issue as konigster has pointed out and they are trying to repair it with a better designed alternative pulley assembly.
It's about a 2 day job assuming they have the parts on hand.
01-05-2009, 12:17 AM
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2013 SL 550 (Previously 2012 Porsche Panamera Turbo-S, 2015 Tesla P85D, 2007 S600, 2005 E55 AMG)
It has a very high probability of happening. My upper right pulley went bad after 18000 miles and it seems to happen only on S600s as far as I know. When they replaced the pulley, they also replaced a connecting part also that had to be modified. Apparently this is a known issue as konigster has pointed out and they are trying to repair it with a better designed alternative pulley assembly. It's about a 2 day job assuming they have the parts on hand.
The contrasts are interesting.. one day at the bottom of the traffic hierarchy on my bike.. the next dat at the top in my S600...
Chris
01-05-2009, 12:34 AM
#4
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cjf, riding a bike to work? About only thing as unsafe as that is driving a Ferrari
LOL...I did my "sabbatical" away from MB/AMG w/F's; pleased I survived w/o incident; hope same outcome for you w/your bike sabbatical
LOL...I did my "sabbatical" away from MB/AMG w/F's; pleased I survived w/o incident; hope same outcome for you w/your bike sabbatical
01-05-2009, 10:37 PM
#5
Super Member
This might be related. When I had my 2007 CL550 in for service last month, the dealer replaced the idle pulley because of a service campaign relating to noisy pulleys. Mine was not making any noise, but they did it as a preventative measure. I don't know if the same pully is used for V12s.
01-24-2009, 09:21 PM
#6
This might be related. When I had my 2007 CL550 in for service last month, the dealer replaced the idle pulley because of a service campaign relating to noisy pulleys. Mine was not making any noise, but they did it as a preventative measure. I don't know if the same pully is used for V12s.
Recently I made a comment on another thread that I thought my pulley was going bad again. I don't think it is as I notice the whining sound only on very cold mornings. Once the car warms up or the temps rise throughout the day, etc, the moaning, whiny sounds goes away. It is really bad between 1000 and 2000 rpms. My thoughts are that the serpentine belt is stiff and tighter and just makes more noise at these low temps (usually below 35).
After a good warm up and a few miles down the road, the car is quiet as can be. Probably the reason I notice it so much is because I don't have far to drive to work (1.3 miles) and so I notice it more often.
