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S55 engine stalls when slowing down

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Old Jan 9, 2011 | 08:52 AM
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cerruti's Avatar
cerruti
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From: A.C.T. Australia
S55 AMG 2003
S55 engine stalls when slowing down
Hi. I've been having a problem with my S55 for a couple of weeks. When i'm slowing down to take a corner or to stop at lights my car will randomly shut down. Its a bit worrying especially when im taking a corner because the steering feels like it locked up. It doesn't happen all the time, just randomly but only when i'm on the brakes. After it shuts down I just put it into park and restart the car it works fine. I've searched everywhere and all i've found is a problem with the CPS however i dont think this is the problem as i can start it immdiately after it shuts down and i have been keeping an eye on the engine temp and it happens wether it is cool or running hot. I have noticed that every now and then when i come to a stop the engine rumbles a bit once its changed back to first gear but this only happens for a few seconds then idles normally. Any help would be really appreciated. Thanks in advance.
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Old Jan 10, 2011 | 11:07 AM
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Trinsoca
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From: Stn Mtn Georgia
2005 S500
Check for vacuum leaks and also the EGR valve, if it is sticking it will cause that problem also.
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Old Jan 10, 2011 | 11:14 AM
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Originally Posted by Trinsoca
Check for vacuum leaks and also the EGR valve, if it is sticking it will cause that problem also.
^ this.
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Old Jan 10, 2011 | 12:22 PM
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
most vacuum related
issues are going to cause idle problems that throw a code.
Same with the EGR you would have a P04** range code.
The cps often throws no code and operating temp or lower can cause the symptoms you have.
For 42 bucks and 15 minutes of your time,why not r/r it and rule it out.
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Old Jan 10, 2011 | 04:06 PM
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Pinto
what year?
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Old Jan 10, 2011 | 05:58 PM
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cerruti
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From: A.C.T. Australia
S55 AMG 2003
2003
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Old Jan 10, 2011 | 06:13 PM
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Viet_Amg408
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Pinto
any chance you have a scanner hook up and read out DTC?

crankshaft sensor fail could make the vehicle stall at times..
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Old Jan 10, 2011 | 10:36 PM
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S55 AMG 2003
No unfortunately i dont have a scanner. Can anyone recommend a good one and where to get it?
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Old Jan 11, 2011 | 04:35 AM
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Pinto
any obd2 scanner from autozone works fine
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