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o2 sensor

  1. Need help with an O2 sensor override thing

    Engine/Transmission
    Can anyone help point me in the right direction. I have an 01 G20t and apparently someone replaced the down pipe without an O2 bung. So they cut off the O2 sensor and put on some override thing. Now that isn't working and the dash is throwing an O2 error code. With this error I cannot pass...
  2. CEL on, P0136, P0400...

    Maintenance
    So while on my way to finalize a deal in Massachusetts, my check engine light came on. The codes read as P0136 (rear heated oxygen sensor) and P0400 (EGR function). Those descriptions are according to the FSM. The only recent work I've done under the hood was changing the valve cover gasket...
  3. Rear O2 Sensor Removal Socket

    Maintenance
    Which socket should I get to remove the rear O2 sensor on a 2002 Sports M/T. The offset one or the deep socket one? Both of them are 22mm.
  4. Spark Plugs Question on 2002 G20

    Maintenance
    I changed the spark plugs on my 2002 G20 this past weekend with NGK PFR6B-11 plugs (I confirmed the gap is 0.043"). 5 days later, the SES light goes on. After getting the error code, it points to rear O2 sensor. Subsequently I changed the plug wires, distributor cap and rotor also. The light...
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