Catalytic Converter: Service and Repair

Removal
1. Disconnect battery ground cable .

2. Raise and support vehicle.

3. Disconnect rear Heated Oxygen Sensor (HO2S) electrical connector.

4. Use Oxygen Sensor Wrench T94P-9472-A to remove rear HO2S.

5. Remove the two muffler-to-converter bolts.

6. Loosen and remove the exhaust manifold-to-Y pipe nuts. Slide flexible link, muffler and muffler outlet pipe rearward. Remove the gasket. Move the dual converter Y pipe rearward. Rotate to clear studs and remove.

Installation
1. Install dual converter Y pipe onto exhaust manifold studs and loosely secure in place with exhaust manifold-to-Y pipe nuts.

2. Install a new non-asbestos gasket between three way catalytic converter and muffler. Secure flange gasket with two nuts. Tighten to 34-46 Nm (25-34 lb.ft.).

3. Secure muffler to exhaust converter frame bracket . Tighten nuts to 25-35 Nm (18-26 lb.ft.).

4. Tighten exhaust manifold connections by alternating the tightening of the manifold bolts or nuts to 34-46 Nm (25-34 lb.ft.).

5. Use Oxygen Sensor Wrench T94P-9472-A to install rear HO2S.

6. Connect rear HO2S electrical connector.

7. Connect battery ground cable.