Car abruptly stopped and re-engaged in S mode
Thread Starter
Member
Joined: Feb 2012
Posts: 131
Likes: 1
C63 ML350
Car abruptly stopped and re-engaged in S mode
I know this has been discussed before but I want more discussion on the issue.
I had a drag day the other day and had issues with the car in S+ Mode Traction completely OFF the car would occasionally cut all power for a second in first or second gear after wide open throttle.
I have an OE Tune on the vehicle and secondary cat delete.
Ever since the car was stock it would occasionally be reluctant at HIGH Rpm say 5.5-6k RPM and cut a little power now with the tune it seems it engages this abrupt loss of power mid to high RPM.
Even around town the car when pushed reasonably hard will cut all power.
It doesn't seem to be mechanical as there are no strange noises and seems to come from the electronics of the car.
This is my 2nd C63 and my first wouldn't do this.
Any history of this issue or technically minded advice much appreciated.
I had a drag day the other day and had issues with the car in S+ Mode Traction completely OFF the car would occasionally cut all power for a second in first or second gear after wide open throttle.
I have an OE Tune on the vehicle and secondary cat delete.
Ever since the car was stock it would occasionally be reluctant at HIGH Rpm say 5.5-6k RPM and cut a little power now with the tune it seems it engages this abrupt loss of power mid to high RPM.
Even around town the car when pushed reasonably hard will cut all power.
It doesn't seem to be mechanical as there are no strange noises and seems to come from the electronics of the car.
This is my 2nd C63 and my first wouldn't do this.
Any history of this issue or technically minded advice much appreciated.
Last edited by C63sydney; Oct 2, 2014 at 02:19 AM.
Thread Starter
Member
Joined: Feb 2012
Posts: 131
Likes: 1
C63 ML350
No I don't believe the tune itself is affecting the power cut only if the torque levels are so much greater that the computer decides to shutoff power to the clutch or trans engager of some sorts?
Thread Starter
Member
Joined: Feb 2012
Posts: 131
Likes: 1
C63 ML350
Bump.
Has anyone had issues with intermittent issues with alternator? I am not getting any Codes come up.
I changed out the K&N Filters thinking it could simply be oil on the MAFS but after a month with stock filters still have the issue?
Thoughts on what it could be;
1. Bad spark plug? The car is now 4 years old.
2. Transmission issue? The car has only 34,000km on it.
3. Bad injector? Would seem to throw a code if it was.
Has anyone had issues with intermittent issues with alternator? I am not getting any Codes come up.
I changed out the K&N Filters thinking it could simply be oil on the MAFS but after a month with stock filters still have the issue?
Thoughts on what it could be;
1. Bad spark plug? The car is now 4 years old.
2. Transmission issue? The car has only 34,000km on it.
3. Bad injector? Would seem to throw a code if it was.
Trending Topics
Banned
Joined: Jun 2013
Posts: 1,317
Likes: 3
S550 on order
fuel pumps ..100% just went through this exactly, have fun waiting 1-2 months for them though from germany 
luckily they are only 700-800 a pop, you'll need 2 + the fuel filter...the car will run like brand new when it's fixed, the pumps won't make a noise either..it just cuts power hard between 5-6k RPM
luckily they are only 700-800 a pop, you'll need 2 + the fuel filter...the car will run like brand new when it's fixed, the pumps won't make a noise either..it just cuts power hard between 5-6k RPM
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Banned
Joined: Jun 2013
Posts: 1,317
Likes: 3
S550 on order
Luckily the pumps aren't even that expensive...$700-800 a piece which is reasonable seeing my sisters ford conturs pump costs $300
and its from the 80s
Senior Member
Joined: Sep 2014
Posts: 474
Likes: 0
From: Calgary, AB
2011 C63 AMG P31
You're car doesn't have S+, because it's pre facelift. You have the automatic transmission.
If you suddenly lost power it is probably stability control, or a K clutch is starting to slip.
If you suddenly lost power it is probably stability control, or a K clutch is starting to slip.
Thread Starter
Member
Joined: Feb 2012
Posts: 131
Likes: 1
C63 ML350
@ AVERY.WHSS Thanks for the advice will drop by merc to check fuel pressure.
@ AMG893 So what was the outcome or remedy did u replace fuel pump or rails?
@ToXicXX I meant S+ as in Smanual mode so S1.
@ AMG893 So what was the outcome or remedy did u replace fuel pump or rails?
@ToXicXX I meant S+ as in Smanual mode so S1.
