W124 o2 sensor eha relationship

Discussion in 'Engine' started by gt-83, Dec 31, 2013.

  1. gt-83

    gt-83 Hardcore MB Enthusiast

    Messages:
    307
    Joined:
    Jan 15, 2008
    Location:
    norwich
    Car:
    1992 300ce
    In my never ending quest to get my car running right, could somebody confirm my ideas on the o2 sensor-EHA relationship
    Am i right in thinking that if the o2 sensor detects rich running, it will adjust the EHA via the ecu, and cause my cut out at warm temperature?, ive tested the sensor, and the heater bells out, and is giving a reading of 0.45 volts on the black (ecu) wire

    As disconnecting the sensor the car runs as it should, OR is it just a case of another link out of the ke system and everything is fine

    Any one component that is disconnected and the car runs fine
     

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