Removal & Installation
Remove the LH catalytic converter, as follows:
- Raise and safely support the vehicle.
- Disconnect the catalyst monitor sensor electrical connector.
- Remove the exhaust Y-pipe.
- Remove the 2 catalytic converter support bracket-to-transmission bolts.
- Remove the 4 nuts and the LH catalytic converter.
- Discard the 4 LH catalytic converter nuts and gasket.
- Remove the LH Heated Oxygen Sensor (HO2S).
- Remove the 3 bolts and the LH exhaust manifold heat shield.
- Remove the 6 nuts and the LH exhaust manifold. Discard the nuts and gasket.
- Clean and inspect the LH exhaust manifold.
Remove and discard the 6 LH exhaust manifold studs.
WARNINGDo not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in leak paths. Use a plastic scraper to clean the sealing surfaces.
Clean the exhaust manifold mating surface of the cylinder head with metal surface prep. Follow the directions on the packaging.
- Install 6 new LH exhaust manifold studs and tighten to 12 Nm (9 ft. lbs.).
Using a new gasket, install the LH exhaust manifold and 6 new nuts. Tighten in the sequence shown to 20 Nm (15 ft. lbs.).
- Install the LH exhaust manifold heat shield and the 3 bolts and tighten to 14 Nm (10 ft. lbs.).
Install the LH HO2S.
NOTEWhen installing the catalytic converter, always install new fasteners and gaskets. Clean the flange faces prior to new gasket installation to ensure proper sealing.
Install the LH catalytic converter, with new gaskets and nuts, in the reverse of the removal procedure. Tighten the retainers as follows:
- Catalytic converter nuts: 40 Nm (30 ft. lbs.)
- Catalytic converter support bracket-to-transmission bolts: 48 Nm (35 ft. lbs.)