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Home >> Subaru >> 2009 >> Impreza WRX STi >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (STI) >> Knock Sensor >> Removal

Knock Sensor: Removal

  1. Disconnect the ground cable from the battery.
    Fig 1: Identifying Battery Ground Cable
    G05019586Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the intercooler. Ref. to REMOVAL , Intercooler.
  3. Remove the intake manifold. Ref. to REMOVAL , Intake Manifold.
  4. Remove the secondary air combination valve RH. Ref. to REMOVAL , Secondary Air Combination Valve.
  5. Remove the knock sensor from the cylinder block.
    Fig 2: Locating Knock Sensor
    G06344666Courtesy of SUBARU OF AMERICA, INC.
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