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Ruff Idle when cold and dies at times

Discussion in 'E39 (1997-2003)' started by riverjamie, May 11, 2008.

    riverjamie guest

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    I have an 2000 528i when cold at times it idles ruff and dies. I was told that a sensor usually causes this. Mass air sensor? If so can I clean it like I've done with an older Ford Explorer I have that has one? If so what would you recommend to clean it? Thanks

    morea3ic guest

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    Welcome to the forum.

    I'm not a wrench - but I think they are refering to the O2 sensor - on the exhuast.

    • Member


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    That's what I was thinking. I was told that can cause a rough idle and poor gas mileage.

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