Catalytic Converter - LH Manifold

Catalytic Converter - LH Manifold, 3.7L

Removal

NOTE: Exhaust fasteners are of a torque prevailing design. Use only new fasteners with the same part number as the original. Torque values must be used as specified during reassembly to make sure of correct retention of exhaust components.

NOTE: Always install new nuts, studs and gaskets. Clean flange faces prior to new gasket installation to make sure of correct sealing.

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Remove the cooling fan motor and shroud. For additional information, refer to Engine Cooling Service and Repair.

3. Remove the LH Heated Oxygen Sensor (HO2S) sensor. For additional information, refer to Electronic Engine Controls Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor - Exploded View.

4. Remove the 3 heat shield bolts and the heat shield.

5. Disconnect the LH Catalyst Monitor Sensor (CMS) electrical connector.

6. Remove and discard the 6 LH catalytic converter manifold-to-cylinder head nuts.

7. Detach the 4 retainers and remove the splash shield.





8. Remove the exhaust Y-pipe. For additional information, refer to Exhaust Y-Pipe Exhaust Y-Pipe.

9. Remove the 2 LH catalytic converter manifold support bracket-to-transmission bolts.
- Remove the LH catalytic converter manifold and discard the gasket.

10. Remove and discard the 6 LH catalytic converter manifold-to-cylinder head studs.

Installation

1. Install 6 new LH catalytic converter manifold-to-cylinder head studs.
- Tighten to 12 Nm (106 lb-in).

2. NOTE: Do not tighten the 2 LH catalytic converter manifold support bracket-to-transmission bolts at this time.

Install a new gasket, the LH catalytic converter manifold and loosely install the 2 LH catalytic converter manifold support bracket-to-transmission bolts.

- Do not tighten the 2 LH catalytic converter manifold support bracket-to-transmission bolts at this time.

3. Install the 6 new LH catalytic converter manifold-to-cylinder head nuts.
- Tighten to 25 Nm (18 lb-ft).

4. Tighten the 2 catalytic converter manifold support bracket-to-transmission bolts.
- Tighten to 48 Nm (35 lb-ft).

5. Install the exhaust Y-pipe. For additional information, refer to Exhaust Y-Pipe Exhaust Y-Pipe.

6. Install the splash shield and the 4 retainers.





7. Connect the LH Catalyst Monitor Sensor (CMS) electrical connector.

8. Install the heat shield and the 3 heat shield bolts
- Tighten to 12 Nm (106 lb-in).

9. Install the LH Heated Oxygen Sensor (HO2S) sensor. For additional information, refer to Electronic Engine Controls Heated Oxygen Sensor (HO2S).

10. Install the cooling fan motor and shroud. For additional information, refer to Engine Cooling Service and Repair.