M275 V12 Bi-Turbo Platform Technical discussion relating to models sharing the M275 V12 Bi-Turbo (V12 TT). Including SL600, SL65 AMG, CL600, CL65 AMG, S600, S65 AMG.
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Multiple misfires

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Old May 8, 2019 | 03:50 PM
  #1  
slonar21's Avatar
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From: America
CL600 2003
Multiple misfires

This morning start my 2003 cl600 and feel a bad vibration, check engine light is on, and smells like bad combustion...

never had had any of these symptoms before, engine ran perfectly, restarted and same thing

here are codes

p0300
p0307
p0311
p0309
p0312
p0308
p0310
p0153

Ok, so it’s drivers side bank, and oxygen sensor in cat (I think)

So, what do you guys think, coil pack? Voltage transformer, or simply the oxygen sensor ( I’m not that lucky lol)

this happens right away at startup, instantly. Parked the car it was fine, next day at startup instant misfires

thanks
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Old May 9, 2019 | 04:38 AM
  #2  
exhaustgases's Avatar
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LS400
Are you getting lots of rain in your area? When did you last get gas? I would suspect bad gas first, before jumping on all the expensive stuff.
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Old May 9, 2019 | 07:35 AM
  #3  
slonar21's Avatar
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From: America
CL600 2003
Thanks for the reply,




I filled the tank to 3/4 4 days prior, and the morning of the problem I was at 1/4. Car ran fine during all this period, even under hard acceleration.




So i don’t think it’s the fuel

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Old May 10, 2019 | 11:57 PM
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2011 E550 Coupe, 1992 Corvette ZR-1, 1991 368ci ZR-1, 1990 ZR-1, 1987 Callaway TT, 05 SL600, CLA45
Coil
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Old Jun 20, 2019 | 01:14 PM
  #5  
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CL600 2003
So, I tested a Voltage transformer and that was not the problem, so got the coil pack replaced and problem resolved...

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