Ranger 4WD V6-245 4.0L VIN X SFI (1999)
Catalytic Converter: Service and Repair
Removal
1. Raise the vehicle.
2. Disconnect the downstream heated oxygen sensor electrical connector.
3. Use the oxygen sensor wrench to remove the downstream Heated Oxygen Sensor (HO2S).
4. Remove the muffler and tailpipe.
5. Remove the three nuts.
6. NOTE: The exhaust hanger bracket insulators can be reused if they show no signs of damage.
7. Remove the Three Way Catalytic Converter (TWC) and the exhaust outlet pipe frame brackets.
Installation
1. Install the exhaust converter inlet pipe gasket, the three way catalytic converter and the exhaust outlet pipe frame brackets.
2. Install the three nuts.
3. Install the muffler and tailpipe.
