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

  • 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 CENTER FLOOR BRACE

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  2. REMOVE CENTER FLOOR CROSSMEMBER BRACE

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  3. REMOVE BODY MOUNTING PLATE

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  4. 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. B00719T

      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).

  5. 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. B006X4D

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

  6. 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. B0083K4

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

  7. 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. B0070QX

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

  8. REMOVE AIR FUEL RATIO SENSOR

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  9. 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. B00846A

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

    2. B006YHW

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

  10. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR


    1. B006YNE

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

  11. REMOVE NO. 1 MANIFOLD CONVERTER INSULATOR


    1. B006WVM

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