Catalytic Converter: Service and Repair

Three-Way Catalytic Converter (TWC) System





1. REMOVE CONVERTER
a. Jack up the vehicle.
b. Check that the converter is cool.
c. Disconnect the heated oxygen sensor.

HINT:
- At the time of installation, please refer to the following items.
- Before installing the oxygen sensor, twist the sensor wire counterclockwise 3 and 1/2 turns.
- After installing the oxygen sensor, check that the sensor wire is not twisted.
If it is twist, remove the oxygen sensor and reinstall it.

d. Remove the 2 bolts and exhaust pipe stay.
Torque: 33 Nm (330 kg.cm, 24 ft.lb)
e. Remove the 2 bolts, and disconnect the bracket.
Torque: 33 Nm (330 kg.cm, 24 ft.lb)
f. Remove the 2 bolts and 2 nuts holding the front exhaust pipe to the tailpipe.
Torque: 56 Nm (570 kg.cm, 41 ft.lb)
g. Remove the 4 nuts holding the front exhaust pipe to the exhaust manifolds.
Torque: 62 Nm (630 kg.cm, 46 ft.lb)
h. Remove the front exhaust pipe (converter) and 3 gaskets

HINT: At the time of installation, please refer to the following items.
Install 3 new gaskets.

2. INSTALL CONVERTER
Installation is the reverse order of removal.