Supercharger belt noise
Thread Starter
Senior Member
Joined: Nov 2001
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From: Boston
2003 CL55
Supercharger belt noise
Recently my dealer replaced the belt and pulley housing in an attempt to cure the small squeak from the belt upon engagement. For the first few days there was no squeak when the engine passed 1750 rpm and the supercharger engaged, but in the past week or so there is again a very minor squeak when the SC engages. I have not spoken to them about it, but will, as I am a bit concerned that any misallignment in the belt/pulley will eventually cause belt failure. I am interested to know if others have noted the belt noise on engagement of the SC. It does not persist, or at least I cannot hear any noise after engagement, but it seems odd that such an otherwise well engineered system would have the noise.
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Joined: Jul 2002
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From: Oregon
C32AMG
A brief chirp is normal
whenever the blower is engaged.Belt-drive systems slip a wee bit when first engaged...that way the parts that were stationary have a brief time to get up to speed.Mine has chirped from the first time I drove it.32K miles and no belt/blower problems.
Thread Starter
Senior Member
Joined: Nov 2001
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From: Boston
2003 CL55
It is definitely a belt slippage noise on supercharger engagement at 1750 rpm. It is not as loud as it was before the dealer replaced the pulley housing and belt, but nevertheles is still there. The noise does not particularly bother me, but the prospect of a misaligned pulley and or belt does, as it may lead to belt faliure with more miles. Anyway, I have about 8500 miles since late March on the car and it absoultely rocks. Handling and acceleration are amazing, especially for such a large car. Most people assume that such a large car must be a sloppy handling and relatively slow car. AMG has done a remarkable job with this car! It is quite different form other cars I have owned and is a joy to drive.
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Joined: Dec 2001
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From: Houston
E55
Is it just me or does anyone else think it's total bull**** to listen to listen to a chirp every time the supercharger engages? What I'm hearing is that ( again as with so many other problems) a number of the cars chirp and the dealer has no real idea what to do.
IMHO MB's cars are way too sophisticated for the dealer service dept's and/or their support and training for the dealers is inadequate.
P.S. - Taking my MB in for service is getting more like a trip to a domestic dealer in the 70's. "They all do that" "We can't find anything wrong" "MB says this is normal"
IMHO MB's cars are way too sophisticated for the dealer service dept's and/or their support and training for the dealers is inadequate.
P.S. - Taking my MB in for service is getting more like a trip to a domestic dealer in the 70's. "They all do that" "We can't find anything wrong" "MB says this is normal"
Last edited by corgiman; Aug 30, 2003 at 11:59 AM.
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Joined: Jul 2002
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From: Oregon
C32AMG
The "chirp" that you're whining about
is inconsequential.Every time I hear it,all I can do is smile. 
If you consider what that little bit of belt squeal is engaging and what it can lead to,you'd realize that a little noise is minor.I like it.
If you want a completely silent car,go buy a Lexus or a Caddy.
If you consider what that little bit of belt squeal is engaging and what it can lead to,you'd realize that a little noise is minor.I like it.If you want a completely silent car,go buy a Lexus or a Caddy.
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Thread Starter
Senior Member
Joined: Nov 2001
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From: Boston
2003 CL55
Hey Steve Clark
How many miles do you have on your 2003 CL55, S55 or SL55 and does your SC belt slip on engagement? I assume, of course, that you do own one of these stunning automobiles. So far, after 8000 miles since late March, it is the only abnormal condition in a superbly engineered car, and as I have said in my posts on the subject. I am concerned that a misaligned pully may cause belt failure as some point, not that the noise itself is a problem. Additionally, perhaps you should consider your choice of words when you have something to say on this forum.
How many miles do you have on your 2003 CL55, S55 or SL55 and does your SC belt slip on engagement? I assume, of course, that you do own one of these stunning automobiles. So far, after 8000 miles since late March, it is the only abnormal condition in a superbly engineered car, and as I have said in my posts on the subject. I am concerned that a misaligned pully may cause belt failure as some point, not that the noise itself is a problem. Additionally, perhaps you should consider your choice of words when you have something to say on this forum.
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Originally posted by victoryroad
perhaps you should consider your choice of words when you have something to say on this forum.
perhaps you should consider your choice of words when you have something to say on this forum.
Also, if I heard no noise when new I would also expect there be no noise at 8500 miles. Something is awry is causing it and could leave you on the side of the road...which only happens at the worst possible moment....
I would make it a point to have service bring the car back to its original no noise at 1750 engagement of the SC.
JMO YMMV
