TL FWD V6-3.5L (2009)
Catalytic Converter: Service and Repair
Warm Up TWC Removal/Installation
Warm Up TWC Removal/Installation
FRONT (Bank 2)
1. Remove the No. 2 the ignition coil and the ignition coil heat insulator.
2. Remove the front A/F sensor (Sensor 1) See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and Repair/A/F
Sensor Replacement and the front secondary HO2S (Sensor 2). See: Powertrain Management/Computers and Control Systems/Oxygen
Sensor/Service and Repair/Secondary HO2S Replacement
3. Remove the exhaust pipe A mounting nuts (front WU-TWC side); J35Z6 engine, See: Muffler/Service and Repair J37A4 engine. See:
Muffler/Service and Repair
4. Remove the EGR pipe. See: Powertrain Management/Emission Control Systems/Exhaust Gas Recirculation/EGR Tube/Service and Repair
5. Remove the A/C condenser fan assembly See: Cooling System/Radiator Cooling Fan/Service and Repair and the radiator upper bracket/cushion.
See: Cooling System/Radiator Cooling Fan/Service and Repair
6. Remove the front WU-TWC bracket, then carefully remove the front WU-TWC.
7. 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.
8. Install the parts in the reverse order of removal.
REAR (Bank 1)
1. Remove the strut brace. See: Body and Frame/Frame/Structural Brace/Service and Repair
2. Remove the rear A/F sensor (Sensor 1) See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and Repair/A/F
Sensor Replacement and the rear secondary HO2S (Sensor 2). See: Powertrain Management/Computers and Control Systems/Oxygen
Sensor/Service and Repair/Secondary HO2S Replacement
3. Remove the P/S heat shield. See: Steering and Suspension/Steering/Steering Gear/Service and Repair/EPS Steering Gearbox Removal and
Installation
4. Remove exhaust pipe A; J35Z6 engine, See: Muffler/Service and Repair J37A4 engine. See: Muffler/Service and Repair
5. Remove the intermediate shaft. See: Transmission and Drivetrain/Drive Axles, Bearings and Joints/Axle Shaft Assembly/Service and
Repair/Removal and Replacement/Intermediate Shaft Removal
6. Remove the rear WU-TWC bracket, then carefully remove the rear WU-TWC.