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Thread: Help re Oxygen sensor for Z32 SE V6

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    Regular Member the-converter's Avatar
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    Question Help re Oxygen sensor for Z32 SE V6

    Does anyone know how many oxygen sensors in a 3.2 V6 engine?
    My mechanic did a scan on my car and he found out one of the sensor is not working.
    I was thinking to replace the whole set myself but I need to know how many sensors I need to buy.
    Does the front and rear sensors are the same?
    Does anyone know the part number?
    How difficult is this job?
    Anyone have replaced o2 sensor before?

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    Regular Member Big Sig's Avatar
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    I think there are 3 sensors in total. Its not too bad as long as they come out ok as they will be very tight!

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    Regular Member gsi.vxr's Avatar
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    I though there was 2. Correct me if I'm wrong.

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    There are four in total. For each cylinder bank there is one before and one after the catalytic converter.

    The mechanic should be able to identify which sensor is not working by the scan tool. You shouldn't need to replace all of them

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    Regular Member gsi.vxr's Avatar
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    Quote Originally Posted by stevedee3 View Post
    There are four in total. For each cylinder bank there is one before and one after the catalytic converter.

    The mechanic should be able to identify which sensor is not working by the scan tool. You shouldn't need to replace all of them
    Yes, your right. All use the same part number too apparently. Can't help with the number though.

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    Quote Originally Posted by stevedee3 View Post
    The mechanic should be able to identify which sensor is not working by the scan tool. You shouldn't need to replace all of them
    I forgot to mention: you should be able to read the fault code(s) yourself using the procedure documented in this thread.

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    Regular Member Big Sig's Avatar
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    Quote Originally Posted by Big Sig View Post
    I think there are 3 sensors in total. Its not too bad as long as they come out ok as they will be very tight!
    Quote Originally Posted by gsi.vxr View Post
    I though there was 2. Correct me if I'm wrong.
    We were fairly close!

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