Catalytic Converter - LH Manifold

Catalytic Converter - LH, 3.5L GTDI

Removal

NOTE: Always install new fasteners 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.

2. Remove the LH Heated Oxygen Sensor (HO2S).

3. Remove the LH exhaust flexible pipe. For additional information, refer to Exhaust Flexible Pipe- LH .

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

5. Remove the 3 LH catalytic converter-to-turbocharger nuts and the catalytic converter.
- Discard the nuts and gasket.


Installation

1. Inspect the LH turbocharger-to-catalytic converter studs for damage.
- If damaged or if a stud comes out when removing the nut, replace the stud.

- Tighten to 25 Nm (18 lb-ft).


2. NOTICE: Failure to tighten the LH catalytic converter manifold-to-turbocharger nuts to specification a second time will cause the LH catalytic converter manifold-to-turbocharger to develop an exhaust leak.

Using a new gasket and 3 new nuts, install the LH catalytic converter manifold to the turbocharger. Tighten the LH catalytic converter manifold in 2 stages.
- Stage 1: Tighten to 40 Nm (30 lb-ft).

- Stage 2: Tighten to 40 Nm (30 lb-ft).


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

4. Install the LH exhaust flexible pipe. For additional information, refer to Exhaust Flexible Pipe- LH .

5. Install the LH Heated Oxygen Sensor (HO2S).