Catalytic Converter: Service and Repair

Single Exhaust:

REMOVAL
1. Raise vehicle.
2. Disconnect heated oxygen sensors at wiring harness connectors.
3. Remove dual converter and pipe-to-exhaust manifold retaining nuts.
4. Remove dual converter and pipe outlet flange to muffler inlet flange retaining nuts.
5. Support dual converter and pipe with a suitable jackstand and remove exhaust converter frame bracket to dual converter Y pipe retaining nuts.
6. Remove dual converter and pipe from vehicle.
7. Replace dual converter Y pipe as an assembly.

INSTALLATION
1. Loosely install dual converter and pipe and support with a suitable jackstand.
2. Install dual converter and pipe onto exhaust converter frame bracket and install retaining nuts. Tighten retaining nuts to 24-31 Nm (18-22 lb ft).
3. Position dual converter and pipe to exhaust manifold studs and install retaining nuts. Do not tighten retaining nuts.
4. Position muffler inlet flange to dual converter and pipe outlet flange. Loosely install retaining nuts.
5. Align exhaust system to proper clearance specifications, as shown in the appropriate illustration.
6. With exhaust system aligned:
a. Tighten dual converter and pipe to exhaust manifold nuts to 34-46 Nm (25-34 lb ft).
b. Tighten muffler inlet flange to dual converter and pipe flange retaining nuts to 30-40 Nm (23-29 lb ft).
7. Connect heated oxygen sensors at wiring harness connectors.
8. Check exhaust system for leaks.
9. Lower vehicle.