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Engine Tech
elective changing O2 sensor
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<blockquote data-quote="fssiaw" data-source="post: 186310" data-attributes="member: 842"><p>mine is e39 523 1999. I do not know exactly how many sensors. i know there are pre and post catalytic and camshaft sensor. </p><p>I would like to know technically which one is related somehow to engine performance, then we can try changing them. I read that we do not need to wait for the light to come like my previous experience but considering the fact of old and worn out insulation, maybe it is wise to change them. what say you all?</p></blockquote><p></p>
[QUOTE="fssiaw, post: 186310, member: 842"] mine is e39 523 1999. I do not know exactly how many sensors. i know there are pre and post catalytic and camshaft sensor. I would like to know technically which one is related somehow to engine performance, then we can try changing them. I read that we do not need to wait for the light to come like my previous experience but considering the fact of old and worn out insulation, maybe it is wise to change them. what say you all? [/QUOTE]
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elective changing O2 sensor
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