Recent content by Vincent_Schweiz

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    3rd Car & here we go again with the O2 sensors!

    In my S54 documentation (source BMW training program) I could read: "Secondary Air Injection is required to reduce HC and CO emissions while the engine is warming up. Immediately following a cold engine start (-10 to 40°C) fresh air/oxygen is injected directly into the exhaust stream. The...
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    Strange Z4M engine problem... Who has an idea?

    I had the exact same engine behaviour when I changed the throttle position switch (the one on the throttle actuator below the intake manifold) and forgot to plug the connector. The idle was "bouncy" like yours with a cold engine. I stoppped the engine, plug the connector and the issue was gone.
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    Swiss Newbie - Z4MC

    I live in the French speaking part (Fribourg canton).
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    Swiss Newbie - Z4MC

    I have been reading the Z4-forum for more than 2 years and really appreciated the technical knowledge of the participants. I come from France and currently live in Switzerland. Plenty of nice mountain passes around my place. I drive on weekends a blue Interlagos Z4MC. It is from 2007 with, red...
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