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 converter sub-assembly (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
Battery terminal is disconnected/reconnected Perform steering sensor zero point calibration Lane departure alert system (w/ Steering Control)

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Pre-collision system
Memorize steering angle neutral point Parking assist monitor system

Click here

Panoramic view monitor system

Click here


  • Replacement of air fuel ratio sensor

  • Gas leak from exhaust system is repaired

 Inspection After Repair

  • Poor idle, etc.

  • Engine start function, etc.

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CAUTION:


  • B0086SF

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

  • B0083FX

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

PROCEDURE


  1. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH

    Click here

  2. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH

    Click here

  3. REMOVE NO. 1 ENGINE UNDER COVER

    Click here

  4. REMOVE FRONT CENTER FLOOR BRACE

    Click here

  5. REMOVE CENTER FLOOR CROSSMEMBER BRACE

    Click here

  6. REMOVE BODY MOUNTING PLATE

    Click here

  7. 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. B0087W7

      Disconnect the heated oxygen sensor connector.

    2. B00867M

      Remove the 4 bolts, 4 compression springs and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust manifold converter sub-assembly (TWC: Front Catalyst) and center exhaust pipe assembly.

    3. Remove the front exhaust pipe assembly (TWC: Rear Catalyst) from the 2 exhaust pipe supports.

    4. Remove the 2 gaskets from the exhaust manifold converter sub-assembly (TWC: Front Catalyst) and the front exhaust pipe assembly (TWC: Rear Catalyst).

  8. REMOVE GENERATOR ASSEMBLY

    Click here

  9. REMOVE NO. 1 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. B0087YY

      Remove the 4 bolts and No. 1 exhaust manifold heat insulator from the exhaust manifold converter sub-assembly (TWC: Front Catalyst).

  10. REMOVE AIR FUEL RATIO SENSOR

    Click here

  11. REMOVE EGR PIPE CONNECTOR

    CAUTION:

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


    1. B0086J2C01
      B00888T Bolt
      B0086HX Nut

      Remove the 4 bolts, nut and EGR pipe connector from the exhaust manifold converter sub-assembly (TWC: Front Catalyst), EGR cooler assembly and cylinder block sub-assembly.

    2. B0083BT

      Remove the 2 EGR cooler gaskets from the EGR pipe connector.

  12. 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. B0084NC

      Remove the bolt, nut and manifold stay from the exhaust manifold converter sub-assembly (TWC: Front Catalyst) and stiffening crankcase assembly.

  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. B0088H0

      Remove the bolt, nut and No. 2 manifold stay from the exhaust manifold converter sub-assembly (TWC: Front Catalyst) and stiffening crankcase assembly.

  14. REMOVE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY (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. B008445

      Remove the 5 nuts and exhaust manifold converter sub-assembly (TWC: Front Catalyst) from the cylinder head sub-assembly.

    2. B0088ZB

      Remove the exhaust manifold gasket from the cylinder head sub-assembly.

  15. REMOVE NO. 1 MANIFOLD CONVERTER INSULATOR


    1. B00866S

      Remove the 3 bolts and No. 1 manifold converter insulator from the exhaust manifold converter sub-assembly (TWC: Front Catalyst).

  16. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR


    1. B0084UV

      Remove the 2 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold converter sub-assembly (TWC: Front Catalyst).

  17. REMOVE STUD BOLT

    Tech Tips

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


    1. B0084XI

      Using an E8 "TORX" socket wrench, remove the stud bolt from the exhaust manifold converter sub-assembly (TWC: Front Catalyst).