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Catalytic Converter Replacement - Left Side (LF1)

Catalytic Converter Replacement - Left Side (LF1)

Removal Procedure

Refer to Hot Exhaust System Warning .

Refer to Safety Glasses Warning .


1. Disconnect the heated oxygen sensor before and after the left catalytic converter.

2. Remove the left catalytic converter nuts (1) to left cylinder head. Replace gasket (2) with a new one.


3. Remove the nuts (1) to the rear muffler assembly.


4. Remove the nuts (2) from the right catalytic converter.

5.
Note

It may be easier to remove catalytic converter by removing the left cylinder studs.


Remove the exhaust bracket insulator (3) from the hanger and lower catalytic converter (5).

6. Carefully lower the catalytic converter to the floor.

7. Transfer oxygen sensors if replacing catalytic converter.


Installation Procedure


1. Refer to Fastener Caution .

Warning

To prevent damage to the exhaust manifold flange or stud, make sure the flange is fully seated before tightening.


Note

Replace the left catalytic to cylinder head nuts and gaskets with new ones.


Install the left catalytic converter nuts to the left cylinder head. Tighten nuts (1) in a criss-cross pattern.

Tighten


First Pass 20 Nm (15 lb ft)

Final pass 46 Nm (34 lb ft).



1. Attach left catalytic converter to insulator hanger bracket (3).


2. Install the left catalytic converter nuts (1) to the rear muffler assembly. Tighten to 46 Nm (34 lb ft) .

3. Install nuts (2) to the right catalytic converter. Tighten to 46 Nm (34 lb ft) .

4. Connect the heated oxygen sensor.

5.
Note

Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or On-Board Diagnostics (OBD) II system performance.


Inspect the exhaust system for leaks.