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Home >> Subaru >> 2004 >> Forester XT, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection (Fuel Systems) (H4DOTC) >> Front Oxygen (A/F) Sensor >> Installation

Front Oxygen (A/F) Sensor: Installation

  1. Before Identifying front oxygen (A/F) sensor, apply anti-seize compound only to the threaded portion of front oxygen (A/F) sensor to make the next removal easier.
    1. Anti-seize compound: SS-30 by JET LUBE 
    CAUTION: Never apply anti-seize compound to protector of front oxygen (A/F) sensor.
  2. Install the front oxygen (A/F) sensor.
    1. Tightening torque: 30 N.m (3.1 kgf-m, 22.1 ft-lb) 
    Fig 1: Identifying Front Oxygen (A/F) Sensor
    G00966368Courtesy of SUBARU OF AMERICA, INC.
  3. Install the service hole cover.
    Fig 2: Identifying Service Hole Cover
    G00966369Courtesy of SUBARU OF AMERICA, INC.
  4. Lower the vehicle.
  5. Install the front right side wheel.
  6. Connect the engine harness to the bracket (B) using clips (A).
    Fig 3: Identifying Engine Harness
    G00966370Courtesy of SUBARU OF AMERICA, INC.
  7. Connect the connector of front oxygen (A/F) sensor.
    Fig 4: Identifying Front Oxygen (A/F) Sensor
    G00966371Courtesy of SUBARU OF AMERICA, INC.
  8. Connect the battery ground cable to battery.
    Fig 5: Connecting Battery Ground Cable To Battery
    G00966372Courtesy of SUBARU OF AMERICA, INC.
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