Catalytic Converter: Service and Repair

Catalytic Converter (17.50.05)

Removal

WARNING: Observe due care when working near a hot exhaust system.

1. Disconnect the battery ground cable.
2. Raise and support the vehicle.

WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.

3. Remove the exhaust system.
4. Release and disconnect the 2 LH HO2S electrical connectors.
- Release the clip.







5. Release and disconnect the 2 RH HO2S electrical connectors.
- Release the clip.







6. Remove the LH catalytic converter.
- Remove and discard the 2 nuts.







7. Remove the RH catalytic converter.
- Remove and discard the 2 nuts.







8. Remove the 4 HO2S from the catalytic converters.

NOTE:
- Do not disassemble further if the component is removed for access only.
- Note the fitted position.







Installation
1. Install the HO2S to the catalytic converters and tighten to 45 Nm (33 lb.ft).
- Clean the components mating faces.
- Apply anti-seize compound to the sensor threads.

WARNING: Make sure the H02S wiring harness is not twisted more than 180 degrees and is not in contact with the exhaust.

CAUTION:
- Make sure the anti-seize compound does not contact the HO2S tip.
- Make sure the anti-seize compound does not contact the catalyst monitor sensor tip.

2. Install the RH catalytic converter.
- Install and lightly tighten the nuts.
3. Install the LH catalytic converter.
- Install and lightly tighten the nuts.
4. Install the exhaust system.
5. Connect and secure the HO2S electrical connectors.
- Secure the 2 clips.
6. Tighten the catalytic converter to exhaust manifold clamps to 40 Nm (30 lb.ft).
7. Connect the battery ground cable.