SL55/63/65/R230 AMG: SL55 chirps like a bird
10-11-2006, 06:49 PM
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SL55 chirps like a bird
I bought a 03 SL55. Runs great, but it "chirps" like a bird, during mild acceleration. Sometimes it will happen right from the stop, and other times during or right before an up-shift. The dealer tells me this is normal and expected. I think a $100K car should not sound like a bird. Any experience in this?? Thanks!
10-11-2006, 08:41 PM
#2
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I bought a 03 SL55. Runs great, but it "chirps" like a bird, during mild acceleration. Sometimes it will happen right from the stop, and other times during or right before an up-shift. The dealer tells me this is normal and expected. I think a $100K car should not sound like a bird. Any experience in this?? Thanks!
10-11-2006, 10:02 PM
#3
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It's a normal sound. At first I found it disturbing, but I got used to it. It kinda differentiates the SL55 from the slower SLs with quad exhaust and AMG bodykit (and fake SL 55 badges). 
10-11-2006, 10:30 PM
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If it bothers you enough, you can ask the dealer about installing the '07 supercharger clutch pack. It solves the problem but will be on your nickel.
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10-12-2006, 01:23 AM
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SL55AMG, Ferrari 348, Ferrari Testarossa, Ferrari F40, Ferrari Mondial t, Ducati 916, Indycar
The 'chirp' is just a little 'wake up call'.........before the boost gives you a swift kick!
10-12-2006, 02:35 AM
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mymbonline
my moms car does that too (e55).
supposedly the older clutch grabs faster/harder than the newer (muffled) 1, thats what my service advisor told me (he has a 2500hp drag car, he knows his ****)
"We
want it to do that"- Gary, Service Advisor (Best Ever)
it was annoying but i got used to it, it gives the car more character
supposedly the older clutch grabs faster/harder than the newer (muffled) 1, thats what my service advisor told me (he has a 2500hp drag car, he knows his ****)
"We
want it to do that"- Gary, Service Advisor (Best Ever)it was annoying but i got used to it, it gives the car more character
10-12-2006, 11:26 AM
#11
I think the easiest simpliest fix was just to lube the clutch, but it'll come back after a while.
10-12-2006, 12:00 PM
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2005 SL55, 2000 CL500
SL55 Chirp
My 2005 does not make any Supercharger "bird" sounds.
At 1500 RPM it just kicks in. Woosh.
I think its a trait of 2003`s and maybe early 2004`s only ?
Different clutch by late 2004 ??
Any later model owners agree on this ?
At 1500 RPM it just kicks in. Woosh.
I think its a trait of 2003`s and maybe early 2004`s only ?
Different clutch by late 2004 ??
Any later model owners agree on this ?
10-12-2006, 04:15 PM
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Several MB's Superperformance MK III Cobra
The clutch assembly was changed in the 2006 model year 55 cars. Unless you chipped your car the SC cut in is higher than 1500 RPM's; it is more like 2600 to 3000 RPM's (my SL is chipped and the SC engages at 1500 RPM). I have 2003. 2004, 2005 and 2006 AMG cars. The only one that did not chirp was the 2006. The 2005 did and I took it to the dealer and they replaced it with the 2006 clutch pack and the chirp is gone. I really don't use the 2003 and 2004 that much so it is not worth the trouble to get them changed out.
10-12-2006, 06:45 PM
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2005 SL55, 2000 CL500
The Chirp and SC kick in
Mine is build Mar 2005.
To my knowledge no chip upgrade.
How can you tell anyway ??
But at 1500 RPM is when she kicks.
You really notice it at low speed, low gear.
Small hesitation then wammo-woosh
Anybody else out there have the same experience with 2005
and SC kick in ?
To my knowledge no chip upgrade.
How can you tell anyway ??
But at 1500 RPM is when she kicks.
You really notice it at low speed, low gear.
Small hesitation then wammo-woosh
Anybody else out there have the same experience with 2005
and SC kick in ?
10-12-2006, 06:53 PM
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Several MB's Superperformance MK III Cobra
Mine is build Mar 2005.
To my knowledge no chip upgrade.
How can you tell anyway ??
But at 1500 RPM is when she kicks.
You really notice it at low speed, low gear.
Small hesitation then wammo-woosh
Anybody else out there have the same experience with 2005
and SC kick in ?
To my knowledge no chip upgrade.
How can you tell anyway ??
But at 1500 RPM is when she kicks.
You really notice it at low speed, low gear.
Small hesitation then wammo-woosh
Anybody else out there have the same experience with 2005
and SC kick in ?
10-12-2006, 08:47 PM
#18
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LS7 powered Corvette
Compare that "chirp" to the whine of the Eaton blower on the Ford Lightning and SVT Cobra. You should be able to get it resolved fairly easily.
If you can't get the pack replaced under warranty, send me a PM.
If you can't get the pack replaced under warranty, send me a PM.
10-16-2006, 06:36 PM
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but I do have to agree on this.. the kompressor starts at 2600 rpms..
you might feel torque at 1500 but that is just the Natural torque of the 5.4L with the correct gearing ratio..
With the experience on my C32 for about 2 years, they (tuners) have not been able to crack the code to make the kompressor start sooner. That applies to the C32 and I don't know about the 55k motor.
Vadim might be able to provide more information, since he was part of that R&D for the C32 cars.
10-16-2006, 10:50 PM
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05 E55, R33 GTR, R33 GTS-t
Isnt peak torque at 2600rpm? i would think then that the charger engages at least before that!
mines an 05, will have to check the month, but no chirp yet, but then its only done 3000miles...
I wouldn't mind some whine too!! can we get these things to whine?! haha. I had a 91 mazda miata with an eaton blower on it, i loved the whine as it revved up! Im sure MB went to lots of trouble to make sure we couldnt hear any SC whine, and now we want it, lol
mines an 05, will have to check the month, but no chirp yet, but then its only done 3000miles...
I wouldn't mind some whine too!! can we get these things to whine?! haha. I had a 91 mazda miata with an eaton blower on it, i loved the whine as it revved up! Im sure MB went to lots of trouble to make sure we couldnt hear any SC whine, and now we want it, lol
10-17-2006, 03:04 AM
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SL55
My 2003 does the chirp at around 1500 to 1800. It feels as though it happens when it shifts gears. Almost like bushings or a squeaky old wire frame bed when you sit on it.
10-26-2006, 10:57 AM
#24
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I just got rid of the chirp. I thought I love the sound, but this thread got me thinking again... so I discussed it with my MB dealer. They installed a new supercharger clutch under warranty... and now it's gone. I kinda miss it.
10-27-2006, 06:53 PM
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E55 AMG
I bought a 03 SL55. Runs great, but it "chirps" like a bird, during mild acceleration. Sometimes it will happen right from the stop, and other times during or right before an up-shift. The dealer tells me this is normal and expected. I think a $100K car should not sound like a bird. Any experience in this?? Thanks!
