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2004 BMW 545i 4.4L Hesitation, Misfire, MIL Lamp on
Posted to European Driveability on 4/15/2019 8 Replies

Hello group. Car originally came in with codes below. Has 8 new coils and plugs. Crankcase vacuum was not in spec so replaced diaphragms in valve covers. When cold, car starts fine but as warms up will begin to miss after a minute or two. Saw misfires o...

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car Vehicle Data

2004 BMW 545i

VIN WBANB33524
Engine4.4 L / 8 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire, MIL Lamp On
OccursCold

Trouble Codes

2742missfire 1
2743missfire 5
2744missfire 4
2745missfire 8
274Emissfire detection sumcheck error
Open Help Request

car Vehicle Data

2004 BMW 545i

VIN WBANB33524
Engine4.4 L / 8 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire, MIL Lamp On
OccursCold

Trouble Codes

2742missfire 1
2743missfire 5
2744missfire 4
2745missfire 8
274Emissfire detection sumcheck error