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Home >> Subaru >> 2012 >> Impreza WRX, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (W/O STI) (WRX-STI) >> Throttle Body >> Removal

Throttle Body: Removal

  1. Disconnect the ground cable from battery.
    Fig 1: Disconnecting Ground Cable From Battery
    G07681569Courtesy of SUBARU OF AMERICA, INC.
  2. Lift up the vehicle.
  3. Remove the under cover. < Ref. to REMOVAL , Front Under Cover. >
  4. Drain approximately 3.0 l  (3.2 US qt, 2.6 lmp qt) of coolant. < Ref. to DRAINING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant. >
  5. Remove the intercooler. < Ref. to REMOVAL , Intercooler. >
  6. Disconnect the connectors from the throttle position sensor.
    Fig 2: Identifying Throttle Position Sensor Connector
    G07681570Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the brake booster vacuum hose from the clip (A), and remove the bolts securing the air bypass pipe to the intake manifold.
    Fig 3: Identifying Brake Booster Vacuum Hose Clip
    G00523617Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the bolts securing the PCV pipe assembly to the intake manifold, and remove the intake duct from the throttle body.
    Fig 4: Locating PCV Pipe Assembly Bolts
    G00523618Courtesy of SUBARU OF AMERICA, INC.
  9. Disconnect the engine coolant hose from throttle body.
    Fig 5: Locating Engine Coolant Hose Clamps
    G07681572Courtesy of SUBARU OF AMERICA, INC.
  10. Remove the throttle body from the intake manifold.
    Fig 6: Locating Throttle Body Bolts Of Intake Manifold
    G07681573Courtesy of SUBARU OF AMERICA, INC.