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Home >> Subaru >> 2012 >> Impreza WRX STi Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (WRX-STI) >> Knock Sensor >> Installation

Knock Sensor: Installation

  1. Install the knock sensor to the cylinder block.
    NOTE: The portion of the knock sensor cord that is pulled out must be positioned at a 60° angle relative to the engine rear.

    Tightening torque: 

    24 N.m (2.4 kgf-m, 17.7 ft-lb) 

    Fig 1: Locating Knock Sensor Installation Position
    G07704454Courtesy of SUBARU OF AMERICA, INC.
  2. Install the secondary air combination valve RH. < Refer to SECONDARY AIR COMBINATION VALVE RH , INSTALLATION, Secondary Air Combination Valve. >
  3. Install the intake manifold. < Refer to INSTALLATION , Intake Manifold. >
  4. Install the intercooler. < Refer to INSTALLATION , Intercooler. >
  5. Connect the battery ground terminal.
    Fig 2: Connecting Ground Cable From Battery
    G07704455Courtesy of SUBARU OF AMERICA, INC.