Catalytic Converter: Service and Repair

Warm Up TWC Removal/Installation

FRONT

1. Remove the engine cover. Intake Manifold Removal and Installation

2. Remove the condenser fan shroud. Service and Repair

3. Remove the No. 2 ignition coil and the ignition coil heat insulator.

4. Remove the front A/F sensor (Sensor 1) A/F Sensor Replacement and the front secondary HO2S (Sensor 2). Secondary HO2S Replacement

5. Remove the exhaust pipe A mounting nuts (front WU-TWC side). Service and Repair

6. Remove the EGR pipe. Service and Repair

7. Carefully remove the front WU-TWC.

8. Carefully install the front WU-TWC with a new gasket and new self-locking nuts. Tighten the nuts in a crisscross pattern in two or three steps.

9. Install the remaining parts in the reverse order of removal.






REAR

1. Lift the vehicle, and support it with jackstands.

2. Remove the intermediate shaft. Intermediate Shaft Removal

3. Remove the rear A/F sensor (Sensor 1) A/F Sensor Replacement and the rear secondary HO2S (Sensor 2). Secondary HO2S Replacement

4. Remove the exhaust pipe A mounting nuts (rear WU-TWC side). Service and Repair

5. Carefully remove the rear WU-TWC.

6. Carefully install the rear WU-TWC with a new gasket and new self-locking nuts. Tighten the nuts in a crisscross pattern in two or three steps.

7. Install the parts in the reverse order of removal.