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Home >> Subaru >> 2017 >> Impreza Base, 4D Sedan, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System >> Knock Sensor >> Removal

Knock Sensor: Removal

  1. Disconnect the ground cable from battery. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  2. Remove the clip from the air intake boot, and loosen the clamp.
    Fig 1: Locating Air Intake Boot Clips
    G11252776Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the air intake boot, and place it aside so that it does not interfere with the work.
    CAUTION: Be careful not to pull out the PCV hose.
    Fig 2: Removing Air Intake Boot
    G11252777Courtesy of SUBARU OF AMERICA, INC.
  4. Disconnect the connector (A) from the knock sensor, and remove the knock sensor from the cylinder block.