RL V6-3.7L (2009)
Catalytic Converter: Service and Repair
Warm Up TWC Removal/Installation
FRONT
1. Remove the engine cover. See: Engine/Intake Manifold/Service and Repair/Intake Manifold Removal and Installation
2. Remove the condenser fan shroud. See: Cooling System/Radiator Cooling Fan/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) 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
5. Remove the exhaust pipe A mounting nuts (front WU-TWC side). See: Exhaust Pipe/Service and Repair
6. Remove the EGR pipe. See: Powertrain Management/Emission Control Systems/Exhaust Gas Recirculation/EGR Tube/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. See: Transmission and Drivetrain/Drive Axles, Bearings and Joints/Axle Shaft Assembly/Service and
Repair/Removal and Replacement/Intermediate Shaft Removal
3. 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
4. Remove the exhaust pipe A mounting nuts (rear WU-TWC side). See: Exhaust Pipe/Service and Repair
