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1998 Toyota 4Runner Question: oxygen sensor

 

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katelin, 3.4L V6, Weaverville, NC, March 27, 2011, 18:50
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where is the oxygen sensor located and how hard is it to replace?

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  • Answer #1

    March 27, 2011, 18:52
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     Master

    there are upstream and downstream o2 sensors. you need to know which one specifically is bad.
    did you get a real diag or a free code pull. if you got the code pull, have the diag before you replace it. a code never identifies a bad part just a failed system.
    what code did you have??

    Roy

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    Visitor, March 28, 2011, 04:33

    I put a k&n air filter on it and now I am getting 50miles per 1/4 tank of gas. That is horrible, I know the oxygen sensor will cause extreme gas intake and thought it might be the reason.. I haven't had the sensor tested yet. If you have any other reasons for this I would be very grateful.
    Katelin

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    Visitor, March 28, 2011, 20:52

    get rid of the k and n filter. it contains oil in the filter and that contaminates the sensors. i would start there before doing anything else.

    Roy

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    Visitor, March 29, 2011, 15:42

    Thank you so much, I'll do that!
    Katelin

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    mastertech6371, March 29, 2011, 16:01
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     Master

    good luck

    roy

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