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Home >> Subaru >> 2007 >> Impreza WRX STi >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DOTC) >> Knock Sensor >> Removal

Knock Sensor: Removal

  1. Disconnect the ground cable from the battery.
    Fig 1: Disconnecting Battery Ground Cable
    G04988132Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the intercooler. <Ref. to REMOVAL , Intercooler .>
  3. Remove the secondary air combination valve. <Ref. to REMOVAL , Secondary Air Combination Valve .>
  4. Disconnect the knock sensor connector.
    Fig 2: Identifying Knock Sensor Connector
    G04998269Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the knock sensor from the cylinder block.
    6. Fig 3: Identifying Knock Sensor
    G04997393Courtesy of SUBARU OF AMERICA, INC.
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