S600 sputters and won't stay started. I just replaced both coil packs. put it all back together and now it won't even stay started. Before the replacements had several misfires. Just got the car from an older couple and they had taken it to the dealer and they had said it needed both coil packs. So I replaced them. it ran and stayed started before the replacement.

 

started?? do you mean engine will not run?

Need engine error codes.

 

Yes, it won't run. Before the replacement I had p101, 02, 03, and so on. I think it was running on like 3cylinders. After I replaced put a scanner on and it had a maf code. So I replaced that. Still nothing. I can try to get the codes again. I know we erased them in hopes it would run and if not it would pop up new codes.

 

You replaced them with what ? New oem Mercedes’ coil packs ?

or Used coil packs ? Chinese coil packs ?

 

Had them rebuilt by V12 IC PAC

 

Had them rebuilt by V12 IC PAC

 

You need DAS/XENTRY - not some code scanner. The codes for engine misfire are P3XX, not P101, etc. as you listed.

Right now, you're guessing at a cause. It could be lots of things. I have to wonder about your scanner showing a MAF code.

There isn't a MAF on the V-12. So, your scanner is basically worthless. Get the proper tool, and re-do the scan to begin a proper diagnosis.

 

Thank you

 

Agree with XENTRY. Crank position sensor should be considered for replacement. Cheap part, hard to access and replace.