SL55/63/65/R230 AMG SL55 AMG Hesitation/Squeak

May 15, 2005 | 07:03 PM

Dragline37

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SL55 AMG, Superformance Daytona Coupe, 350RWHP TRD Sequoia, Porsche 928S

SL55 AMG Hesitation/Squeak

Anyone else having issues with the 55's supercharger clutch giving a little squeak associated with a slight hesitation? Usually happens around 2000-2500rpm in both 1st and 2nd gears. Any help would be greatly appreciated!

Thanks,
Drag

May 16, 2005 | 08:44 AM

sprins

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Joined: Jan 2005

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G55, SLS, smart eq

From what I understand this is normal behaviour. Many others including myself experience this and MB says it's not a problem.

May 16, 2005 | 03:21 PM

liveseyd

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From: Bedfordshire , England

SL55amg , Range Rover TD6 Vogue , Lotus 340R , Saab 9-5 SE Estate

I think it's the supercharger drive belt as it kicks in. Mine does it occasionally.

David

May 16, 2005 | 08:20 PM

Dragline37

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SL55 AMG, Superformance Daytona Coupe, 350RWHP TRD Sequoia, Porsche 928S

I demonstrated the "hesitation" to the dealer's service foreman today during a diagnostic test drive. His words, "That ain't right" (Remember, I'm in Alabama). The supercharger clutch may be slipping when engaged. This is NOT normal.

1st gear...tooling along until 2000-2500rpm..."CHIRP!" accompanied by hesitation/cough. In a 130K vehicle? Nah, I don't think so. When the supercharger engages on my Toyota there is NO chirp and there is NO hesitation...just giddyup! The only "chirp" comes from breaking loose those 285 sized fat ladies in the rear!

Drag

Last edited by Dragline37; May 16, 2005 at 08:25 PM.

May 16, 2005 | 10:28 PM

alpine

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Joined: May 2005

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From: Central Florida

SL65 AMG

Ya thats normal becuase, i test drove one and it did the same thing

May 20, 2005 | 02:06 PM

jettie1767

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Joined: Feb 2004

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From: Colts Neck, NJ

08 CL600 Black

AMG in Germany said it's normal. It is a belt squeak when the supercharger kicks in. And no, it won't get any louder or worse.

May 26, 2005 | 11:50 AM

Vegas55

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Joined: May 2005

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2003 S55 AMG

Quote:

Originally Posted by Dragline37

Drag,

I and three others in Las Vages are having the same issue. There is a fix for the chirping noise but not for the hesitation. The foreman at our local MB Service center is in contact with the engineers in Germany for a fix. It does have to do with the supercharger engaging and it's software related - the noise will go away with the fix but the hesitation continues. Shoot me an email and I'll be sure to let you know when there is a fix. I've been working with my guy for nearly 3 months and spoke with him yesterday. He's hoping to hear back in the next month or so from the engineers in Germany. Hang in there!

Vegas