O2 Sensor Issues

Discussion in 'Discovery' started by bienville_fly, Aug 26, 2016.

  1. bienville_fly

    bienville_fly New Member

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    Hey Guys, I've been snooping around some and have gotten some very good info here. I hope to eventually have an opinion worth giving but for right now I have a question.

    I have a 2004 Land Rover Discovery 2 (SE7) and I keep having trouble with my o2 Sensors. It is always on the 2nd bank. I just replaced the upper intake manifold gasket, and both valve cover gaskets, throttle body gasket and replaced all four of the o2 sensors.

    But I keep getting a code for the upstream o2 sensor. It isn't putting my service engine light on but it is showing on my carsoft.

    Also I am using the o2 sensors suggested from Atlantic British. The truck is running perfectly and I'm not getting any spotting in my exhaust or rough idling like it did before I replace the o2 sensors.

    I will clear the code but within about 20 miles or so it pops back up. Any help would be appreciated.

    Thanks guys
     
  2. joey

    joey Custom Rover Accessories Staff Member

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    Try cleaning your Mass Air Flow Sensor.
     
  3. Scott Bebber

    Scott Bebber New Member

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    Were you able to find the issue?. If not, are you able to monitor fuel trim data at idle and at 2500 rpm?
     

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