Pelican Parts Forums - Question on BMW 3-Series E36 O2

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Hello guys, I have a 97 323i, and the engine "fails" when cold, like miss the "burn" in one of the cylinders. After some time, when the engine is almost warm the problem goes away, but I feel like the engine lose performace on the accelerate. Also on Scanner, it says that the O2 sensors could be bad. Do you think it could really be the sensors? Thx.

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This post was auto-generated based upon a question asked on our tech article page here: BMW E36 3-Series Oxygen Sensor - O2 Sensor - Replacement (1992 - 1999) | Pelican Parts DIY Maintenance Article

O2 could be faulty but would not cause a misfire. Sounds like an engine misfire. I would check spark, fuel and compression on all cylinders.

- Nick