Catalytic Converter: Service and Repair

Removal Procedure

^ Tools Required
- J 39194-B Oxygen Sensor Wrench





1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Disconnect the pre and post heated oxygen sensor connectors.
3. Remove the muffler pipe flange bolts.





4. Remove the exhaust manifold flange nuts.





5. Remove the catalytic converter support bracket bolts.
6. Remove the catalytic converters from the muffler pipe flange.





7. Remove the muffler pipe flange gasket.
8. Use J 39194-B to remove the heated oxygen sensors.

Installation Procedure

Notice: Refer to Fastener Notice in Service Precautions.





1. Use J 39194-B to install the heated oxygen sensors.
Tighten the heated oxygen sensor to 42 Nm (31 ft. lbs.).
2. Install the muffler pipe flange gasket.
3. Install the catalytic converters to the muffler pipe flange.





4. Install the catalytic converter support bracket bolts.
Tighten the catalytic converter support bracket bolts to 20 Nm (15 ft. lbs.).





5. Install the exhaust manifold flange nuts.
Tighten the exhaust manifold flange nuts to 25 Nm (18 ft. lbs.).





6. Install the muffler pipe flange nuts.
Tighten the muffler pipe flange nuts to 40 Nm (30 ft. lbs.).
7. Connect the pre and post heated oxygen sensor connectors.
8. Inspect all exhaust system clearances. Refer to Exhaust System Clearances.
9. Start the engine and inspect the exhaust system for leaks.
10. Lower the vehicle.