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Thread: 02 Sensors Missing?

  1. #1
    Join Date
    Sep 2018
    Location
    South Dakota
    Posts
    24
    My Cars
    2001 740iL

    02 Sensors Missing?

    My 740iL only has one set of 02 Sensors, right after the Cats about mid-driver door. Realoem diagrams display Pre-Cat and Post-Cat 02 sensors, and every thread I've read tells me there are 4 sensors. The plastic box which holds the post cat sensor wire on my car only has one wire running through it, and there are no holes in my exhaust nor any wires dangling anywhere.

    Im diagnosing misfire with plugged cats and plan on deleting these cats but I need to figure out how to handle the 02 sensors for a straight pipe setup.


    Solved. They're a few inches from the headers, thus located in the engine section of Realoem, not Exhaust.
    Last edited by Indigo46n2; 06-25-2019 at 07:41 PM. Reason: Solved.

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