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2008 Mercedes-Benz S550 5.5L Poor Idle Quality, Misfire, MIL Lamp on
Posted to European Driveability on 8/17/2018 6 Replies

I tried to set readiness monitors, but drove 2 hours without a MIL, and without setting 2 heater, Evap, or air injection. Idled for 30 minutes next day, and P0301 set! I checked compression and got ugly numbers all around. I tested my insight and got 175ps...

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  Related Documents & Media  2008 Mercedes-Benz S550

 
Message Closed w/FIX

car Vehicle Data

2008 Mercedes-Benz S550

VIN WDDNG71X18
Engine5.5 L / 8 cyl / GAS
Trans7-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursIdle

Trouble Codes

P0301Cylinder 1 Misfire Detected
Message Closed w/FIX

car Vehicle Data

2008 Mercedes-Benz S550

VIN WDDNG71X18
Engine5.5 L / 8 cyl / GAS
Trans7-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursIdle

Trouble Codes

P0301Cylinder 1 Misfire Detected