Catalytic Converter: Service and Repair
Warm Up TWC Removal/Installation
FRONT
1. Remove the engine cover.
2. Remove the condenser fan shroud Radiator and A/C Condenser Fan, Motor, and Shroud Removal and Installation.
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. Remove the front WU-TWC bracket, then 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 parts in the reverse order of removal.
REAR
1. Raise the vehicle on a lift.
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.