2012 Subaru Legacy GT LimitedFACTORY OEM SERVICE PROCEDURE

Intake Manifold: Removal

  1. Remove the collector cover.
  2. Collect the refrigerant from A/C system. Refer to PROCEDURE .
  3. Release the fuel pressure. Refer to , RELEASING OF FUEL PRESSURE , PROCEDURE, Fuel.
  4. Disconnect the ground cable from battery.
    Fig 1: Disconnecting Ground Cable From Battery
    G07910644Courtesy of SUBARU OF AMERICA, INC.
  5. Open the fuel filler lid and remove the fuel filler cap.
  6. Lift up the vehicle.
  7. Remove the under cover. Refer to FRONT UNDER COVER .
  8. Drain approximately 2.0 l  (2.1 US qt, 1.8 Imp qt) of coolant. Refer to ENGINE COOLANT .
  9. Disconnect the connectors from exhaust oil flow control solenoid valve (A) and exhaust camshaft position sensor (B).
    Fig 2: Identifying Exhaust Oil Flow Control Solenoid Valve And Exhaust Camshaft Position Sensor
    G06648740Courtesy of SUBARU OF AMERICA, INC.
  10. Disconnect the connectors from wastegate control solenoid valve, and remove the clip (A) which secure the engine harness.
    Fig 3: Identifying Engine Harness Clip
    G06648741Courtesy of SUBARU OF AMERICA, INC.
  11. Lower the vehicle.
  12. Remove the air intake duct. Refer to AIR INTAKE DUCT .
  13. Remove the intercooler. Refer to INTERCOOLER .
  14. Disconnect the A/C pressure hoses from A/C compressor. Refer to REMOVAL .
  15. Disconnect the brake booster vacuum hose.
    Fig 4: Locating Brake Booster Vacuum Hose
    G06648745Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the brake booster vacuum hose from the clip (A).
  17. Remove the bolts which secure the engine harness and PCV pipe to the intake manifold, and remove the intake duct from the throttle body.
    Fig 5: Locating Engine Harness And PCV Pipe Mounting Bolts
    G00525066Courtesy of SUBARU OF AMERICA, INC.
  18. Disconnect the connector from the throttle position sensor, and disconnect the preheater hose from the throttle body.
    Fig 6: Locating Preheater Hose And Throttle Position Sensor Connector
    G00525067Courtesy of SUBARU OF AMERICA, INC.
  19. Disconnect the vacuum hose from the PCV valve.
    Fig 7: Locating Vacuum Hose
    G06648742Courtesy of SUBARU OF AMERICA, INC.
  20. Disconnect the vacuum hose from blow-by pipe, and remove the bolt securing the blow-by pipe to the intake manifold protector RH.
    Fig 8: Locating Blow-By Pipe
    G06648747Courtesy of SUBARU OF AMERICA, INC.
  21. Disconnect the vacuum control hose (A) from PCV pipe, and remove the PCV pipe from the intake manifold protector RH.
    Fig 9: Locating PCV Pipe Mounting Nut
    G06648748Courtesy of SUBARU OF AMERICA, INC.
  22. Disconnect the bulkhead harness connector from the engine harness connector (brown).
    Fig 10: Locating Bulkhead Harness Connector
    G06648749Courtesy of SUBARU OF AMERICA, INC.
  23. Remove the bolt securing the bulkhead harness connector bracket, and disconnect the bulkhead harness connector from the engine harness connector (black).
    Fig 11: Locating Bulkhead Harness Connector Bracket And Mounting Bolt
    G06648750Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the engine harness connector from the engine rear hanger.
    Fig 12: Locating Engine Rear Hanger And Engine Harness Connector
    G06648751Courtesy of SUBARU OF AMERICA, INC.
  25. Disconnect the connectors from the engine coolant temperature sensor (A), oil pressure switch (B) and crankshaft position sensor (C).
    Fig 13: Identifying Engine Coolant Temperature Sensor, Oil Pressure Switch And Crankshaft Position Sensor
    G06648265Courtesy of SUBARU OF AMERICA, INC.
  26. Disconnect the connectors from front oxygen (A/F) sensor (A) and rear oxygen sensor (B).
    Fig 14: Identifying Front Oxygen (A/F) Sensor And Rear Oxygen Sensor
    G06648753Courtesy of SUBARU OF AMERICA, INC.
  27. Remove the clip which secure the generator cord to the intake manifold protector LH.
    Fig 15: Locating Generator Cord Clip
    G06648754Courtesy of SUBARU OF AMERICA, INC.
  28. Disconnect the connector from the knock sensor.
    Fig 16: Locating Knock Sensor
    G06648755Courtesy of SUBARU OF AMERICA, INC.
  29. Disconnect the connector from the intake camshaft position sensor.
    Fig 17: Locating Intake Camshaft Position Sensor
    G06648756Courtesy of SUBARU OF AMERICA, INC.
  30. Disconnect the connector from the intake oil flow control solenoid valve.
    Fig 18: Locating Intake Oil Flow Control Solenoid Valve Connector
    G00525068Courtesy of SUBARU OF AMERICA, INC.
  31. Disconnect the connector (A) from oil level switch.
  32. Disconnect the connector (B) from ignition coil, and remove the clips (C) and bolt (D) securing the engine harness or oil level switch harness to the rocker cover.
    Fig 19: Identifying Oil Level Switch Connector, Ignition Coil Connector And Clips
    G06648758Courtesy of SUBARU OF AMERICA, INC.
  33. Attach ST to the fuel delivery pipe and push ST in the direction of arrow mark to disconnect the fuel delivery hose.

    ST 42099AE000 QUICK CONNECTOR RELEASE

    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from hoses using a container or cloth.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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