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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Misfires and mixture control problems



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      04-08-2021, 01:35 AM   #1
Mendelson
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Drives: 2010 BMW E90 328i xDrive N51 L
Join Date: Apr 2021
Location: New York

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Misfires and mixture control problems

So I've been having mixture control issues and misfires.
Most parts on this car have already been replaced. This is for a 2010 328i X with an N51

coils
Spark plugs
Purge valve
02 sensors - pre cat
Secondary hose
Manifold seals
Oil filler cap
TB seal
Maf
Fuel pump

I'm still getting these misfire codes and mixture codes and have been doing a process of elimination from here on, but can't seem to figure it out.
Is there anyone in NY able to help, any mechanic well known to you who has the proper tools to narrow down the issue?
Indie shops will not be able to figure this out.
I'll put up some photos of the codes I've pulled but disregard the CAS FZD and FRM codes. They are intermittent since the car sometimes just stalls when testing.

Any help would be greatly appreciated
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