EXHAUST MANIFOLD REMOVAL

Info Added 2017-10-06

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 (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:


  • A001RVS

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

  • A001Q3Z

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

PROCEDURE


  1. REMOVE AIR FUEL RATIO SENSOR

    Click here

  2. REMOVE NO. 1 ENGINE UNDER COVER

    Click here

  3. REMOVE FRONT FLOOR COVER LH


    1. A001QSLC01
      B0048I2 Bolt
      B0048S8 Clip

      Remove the 2 bolts and clip and disengage the 5 clamps to remove the front floor cover LH from the vehicle body.

  4. REMOVE FRONT FLOOR COVER RH

    Tech Tips

    Perform the same procedure as for the front floor cover LH.

  5. REMOVE FRONT FLOOR CENTER BRACE


    1. A001PUX

      Remove the 12 bolts and 3 front floor center braces from the vehicle body.

  6. 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. A001QPP

      Disconnect the heated oxygen sensor connector.

    2. Disengage the wire harness clamp.

    3. A001PTF

      Remove the 4 bolts and 4 compression springs and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust manifold (TWC: Front Catalyst) and tail exhaust pipe assembly.

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

    5. Remove the 2 exhaust pipe gaskets from the exhaust manifold (TWC: Front Catalyst) and front exhaust pipe assembly (TWC: Rear Catalyst).

  7. REMOVE WIRING HARNESS CLAMP BRACKET

    CAUTION:

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


    1. A001QQD

      Disengage the clamp and remove the bolt and wiring harness clamp bracket from the cylinder head sub-assembly.

    2. A001Q2N

      Disengage the 3 clamps and remove the bolt and wiring harness clamp bracket from the front suspension crossmember sub-assembly.

  8. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR

    CAUTION:

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


    1. A001Q6E

      Remove the 6 bolts and No. 1 exhaust manifold heat insulator from the exhaust manifold (TWC: Front Catalyst).

  9. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR

    CAUTION:

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


    1. A001RO8

      Remove the 4 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold (TWC: Front Catalyst).

  10. REMOVE MANIFOLD STAY

    CAUTION:

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


    1. A001QQP

      Remove the 3 bolts and manifold stay from the exhaust manifold (TWC: Front Catalyst) and cylinder block sub-assembly.

  11. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst)

    CAUTION:

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


    1. A001NX1

      Remove the 7 nuts and exhaust manifold (TWC: Front Catalyst) from the cylinder head sub-assembly.

    2. A001Q8YC01
      *1 Exhaust Manifold To Head Gasket
      *2 EGR Cooler Gasket

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