Stalling and shaking
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2009 040 Black C63, 2009 Arctic White G55, 2012 Storm Red CLS550 4Matic
Stalling and shaking
For some odd reason my car acted up the other night and stalled while the car was stopped and in reverse. I turned the car back on and everything was fine until I did a pull and on the third pull at WOT around 90mph the car started violently shaking and I had to slow down. Never experienced anything like this before other than the car stalling once before about 2 years ago. Anyone have any idea what's going on with my car?
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S550 on order
does it only happen after 4-5k RPM? or right off the bat? If it happens around 4-5k and feels like the car's gonna blow up, it's probably the fuel pumps (just went through this) intake manifold whistles ..it won't do much to the car, fuel pumps feel like it's about to explode though..my car had the exact thing happen, stalled a year ago, thought nothing off it, then one day it stalled again, then again, then shaked, then i beat on it and it CEL blinked and it ran like crap until I had it fixed 2 weeks ago
Thread Starter
Senior Member
Joined: Jul 2009
Posts: 407
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2009 040 Black C63, 2009 Arctic White G55, 2012 Storm Red CLS550 4Matic
It did probably happen around 4-5k given the speed and gear. How much did the fuel pump run you and how can I get this diagnosed?
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Joined: Jul 2009
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2009 040 Black C63, 2009 Arctic White G55, 2012 Storm Red CLS550 4Matic
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2017 Mini Cooper S Clubman ALL4 - British Racing Green
I had both my fuel pumps replaced under warranty a long time ago, I believe they were around $900 each plus labor (and a month waiting for the parts to be shipped from Germany).. I did put close to 2000 miles on the loaner they gave me 
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Cls55
does it only happen after 4-5k RPM? or right off the bat? If it happens around 4-5k and feels like the car's gonna blow up, it's probably the fuel pumps (just went through this) intake manifold whistles ..it won't do much to the car, fuel pumps feel like it's about to explode though..my car had the exact thing happen, stalled a year ago, thought nothing off it, then one day it stalled again, then again, then shaked, then i beat on it and it CEL blinked and it ran like crap until I had it fixed 2 weeks ago
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Joined: Oct 2007
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From: Texas
10 C six trizzle
hello friend, i have a cls55 2006 have same symptoms like you,at higher speed when i punch the gas pedal i feel car stalls or the rpms dont go smooth like little shaking,maybe could be fuel pumps?i check the fuel pump was 7/05 date,i have a 82mm tb and a tune,i order 76mm pulley car make the symptom woors,
