Intermittent Cylinder 1 Misfire

[JoeyBimX5din]

I am receiving an intermittent cylinder 1 misfire. It misses at higher RPM, then throws the code, and then will reset once cleared. I am going to try the coil pack, the plugs were done within the last 3,000 miles. I may replace the cylinder 1 plug just because I am there, and I am not sure if the misfire may be from it.

I have two different part numbers for Bosch coil packs on rock auto.

BOSCH 0221504470
BOSCH 00044

I see the top number does list (00044) by it, but the price is different. Did BMW or Bosch make an updated coil pack, or are these the same part, and I should buy the cheaper one?

[philly42]

Originally Posted by JoeyBimX5din

I am receiving an intermittent cylinder 1 misfire. It misses at higher RPM, then throws the code, and then will reset once cleared. I am going to try the coil pack, the plugs were done within the last 3,000 miles. I may replace the cylinder 1 plug just because I am there, and I am not sure if the misfire may be from it.

I have two different part numbers for Bosch coil packs on rock auto.

BOSCH 0221504470
BOSCH 00044

I see the top number does list (00044) by it, but the price is different. Did BMW or Bosch make an updated coil pack, or are these the same part, and I should buy the cheaper one?

Usually when diagnosing misfire issues, it's recommended to swap components individually to another cylinder to see if the misfire moves. For example if swapping coils from 1 to 4 creates the misfire to now be in 4 then the issue is with the coils.

or you can just upgrade all you coils and call it a day. If you continue to have problems it may be spark plug or injector related.

[JoeyBimX5din]

they have an upgraded coil that is better then the two part numbers I mentioned above?