EXHAUST MANIFOLD REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during exhaust manifold assembly RH (TWC: Front Catalyst) and exhaust manifold assembly LH (TWC: Front Catalyst) removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link

  • Replacement of air fuel ratio sensor

  • Gas leak from exhaust system is repaired

 Inspection After Repair

  • Poor idle, etc.

  • Engine start function, etc.

Click here

CAUTION:


  • B006NSJ

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

  • B006O6C

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

PROCEDURE


  1. REMOVE CONSOLE BOX ASSEMBLY

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  2. DISCONNECT HEATED OXYGEN SENSOR CONNECTOR (for Bank 1)

    CAUTION:

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.


    1. B006NMF

      Disconnect the heated oxygen sensor connector.

    2. B006QN0

      Disengage the heated oxygen sensor grommet from the vehicle body.

    3. Disengage the wire harness clamp.

  3. REMOVE FRONT NO. 3 EXHAUST PIPE SUB-ASSEMBLY

    CAUTION:

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.


    1. B006NGN

      Remove the 4 bolts, 2 nuts and 2 compression springs and front No. 3 exhaust pipe sub-assembly.

    2. Remove the 3 gaskets from the front No. 3 exhaust pipe sub-assembly.

  4. REMOVE MANIFOLD STAY

    CAUTION:

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.


    1. B006L8L

      Remove the 2 bolts, nut and manifold stay from the exhaust manifold sub-assembly RH (TWC: Front Catalyst) and rear engine mounting bracket.

  5. REMOVE EXHAUST MANIFOLD ASSEMBLY RH (TWC: Front Catalyst)

    CAUTION:

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.


    1. B006NXA

      Disconnect the air fuel ratio sensor (for Bank 1) connector.

    2. Disengage the 3 wire harness clamps.

    3. B006L1S

      Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly RH (TWC: Front Catalyst) from the cylinder head sub-assembly RH.

  6. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)


    1. B006LES

      Remove the exhaust manifold to head gasket (for Bank 1) from the cylinder head sub-assembly RH.

  7. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)

    Click here

  8. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)

    CAUTION:

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.


    1. B006QJ7

      Remove the 2 bolts and No. 1 exhaust pipe support bracket.

  9. REMOVE FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst)

    CAUTION:

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.


    1. B006OCQ

      Disengage the wire harness clamp.

    2. Disconnect the heated oxygen sensor (for Bank 2) connector.

    3. B006KVA

      Remove the 2 nuts and front exhaust pipe assembly from the exhaust manifold sub-assembly LH (TWC: Front Catalyst).

    4. Remove the gasket from the front exhaust pipe assembly.

  10. REMOVE V-BANK COVER SUB-ASSEMBLY

    Click here

  11. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)

    Click here

  12. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR

    CAUTION:

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.


    1. B006MEZ

      Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold assembly LH (TWC: Front Catalyst).

  13. REMOVE NO. 2 MANIFOLD STAY

    CAUTION:

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.


    1. B006KR2C01
      B006QOD Bolt
      B006LKF Nut

      Remove the bolt, nut and No. 2 manifold stay from the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly.

  14. REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)

    CAUTION:

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.


    1. B006NIP

      Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly LH (TWC: Front Catalyst).

  15. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)


    1. B006O31

      Remove the exhaust manifold to head gasket (for Bank 2) from the cylinder head sub-assembly.

  16. REMOVE STUD BOLT

    Tech Tips

    If a stud bolt is deformed or its threads are damaged, replace it.


    1. B006PVV

      Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly RH (TWC: Front Catalyst).

    2. B006M7R

      Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly LH (TWC: Front Catalyst).