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O2 sensor

Discussion in 'E36 M3 (1995-1999)' started by jaredrall, Apr 2, 2008.

    jaredrall guest

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    How do you know which O2 sesor is bad, and anyone know a reliable place to get them?

    cj morgan guest

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    very poor gas mileage could mean a bad O2 sensor. autopartswarehouse.com or bavauto.com are where i get my parts.
    • Member

    330indy1

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    a bad O2 sensor

    will usually throw a check engine code.

    what vehicle do you have?

    jaredrall guest

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    I have a 1995 M3, there are 2 (pre and post cat) O2 sensors correct?

    cj morgan guest

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    i have a 1990 325i.i believe i only have one O2 sensor

    jimgen guest

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    No. Only one O2 Sensor on the 95 M3. Nice thing about the OBD-1 cars.

    mac townsend guest

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    for my 84 325E I used a generic 3-wire sensor and just spliced it in. This one (a Denso) was $25 on evil bay, but I've used one like it (but Bosch) on my 93 SAAB for $60.

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