SLR/C199/R199/Z199: Top speed problems - please advise.
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Newbie
Joined: Jan 2005
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Top speed problems - please advise.
Have any SLR owners encountered an issue whereby at a certain speed, in my case most often around 290kmh (181mph), most of the power cut out and the car would not accelerate any further?
Power seemed to only be restored when I let the vehicle drift back down to around 140kmh (87mph), at which point all the power and torque returned.
I don't think it's a rate limiter situation because the issue occurred at various speeds, most often at 290kmh, but also at 210kmh and 230kmh. It's almost as if the car went into a limp-home mode, no matter how much throttle I gave it.
Any advice?
The vehicle didn't throw any codes, and the only thing I can think of is that it is 2 days past the first service appointment.
Help, please?
Power seemed to only be restored when I let the vehicle drift back down to around 140kmh (87mph), at which point all the power and torque returned.
I don't think it's a rate limiter situation because the issue occurred at various speeds, most often at 290kmh, but also at 210kmh and 230kmh. It's almost as if the car went into a limp-home mode, no matter how much throttle I gave it.
Any advice?
The vehicle didn't throw any codes, and the only thing I can think of is that it is 2 days past the first service appointment.
Help, please?
MBWorld Fanatic!
Joined: Dec 2005
Posts: 1,653
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From: Ann Arbor
'03 SL55
The symptoms sound similar to the intercooler pump failures discussed in various 55 Kompressor threads such as this one: https://mbworld.org/forums/showthread.php?p=2224412
That might be worth checking out. Good luck!
That might be worth checking out. Good luck!
Member
Joined: Jun 2005
Posts: 104
Likes: 0
From: Toronto Canada
07 SL550 / 07 E63 AMG
The symptoms sound similar to the intercooler pump failures discussed in various 55 Kompressor threads such as this one: https://mbworld.org/forums/showthread.php?p=2224412
That might be worth checking out. Good luck!
That might be worth checking out. Good luck!
Yeah, sounds exactly like my S55, run it hard for a while or hard through the gears and at some point all of the sudden no more boost (limp mode). If it's the same problem I had then the intercooler pump has failed and needs to be replaced. If that's the problem it'll get worse over time.
Last edited by Sean03S55; Jun 1, 2007 at 10:11 AM.
MBWorld Fanatic!
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From: Fremont, Ca
EVOTECH Mercedes AMG
Have any SLR owners encountered an issue whereby at a certain speed, in my case most often around 290kmh (181mph), most of the power cut out and the car would not accelerate any further?
Power seemed to only be restored when I let the vehicle drift back down to around 140kmh (87mph), at which point all the power and torque returned.
I don't think it's a rate limiter situation because the issue occurred at various speeds, most often at 290kmh, but also at 210kmh and 230kmh. It's almost as if the car went into a limp-home mode, no matter how much throttle I gave it.
Any advice?
The vehicle didn't throw any codes, and the only thing I can think of is that it is 2 days past the first service appointment.
Help, please?
Power seemed to only be restored when I let the vehicle drift back down to around 140kmh (87mph), at which point all the power and torque returned.
I don't think it's a rate limiter situation because the issue occurred at various speeds, most often at 290kmh, but also at 210kmh and 230kmh. It's almost as if the car went into a limp-home mode, no matter how much throttle I gave it.
Any advice?
The vehicle didn't throw any codes, and the only thing I can think of is that it is 2 days past the first service appointment.
Help, please?
The SLR has two intercooler pumps, and it seems like you are having a pump or possibly both pump failures. When the pump fails, it will not throw the code, but the car will be "limping" even though you are on the full throttle.
Thread Starter
Newbie
Joined: Jan 2005
Posts: 10
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Okay, thanks to everyone. I had figured it was that exact issue, although it was very nice to read about similar experiences from other posters.
I think it's probably a good excuse to upgrade to a higher flow water pump.
I think it's probably a good excuse to upgrade to a higher flow water pump.
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