Catalytic Converter: Service and Repair
Catalytic Converter with Front Exhaust Pipe
Removing
- Open the quick-release fasteners - arrows - and remove the engine cover.
- Remove right cover - 1 - in the engine compartment, if equipped.
- Disengage Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) from the air guide.
- Remove bolts - arrows -.
- Remove air duct - 2 -.
- Disconnect the connector - 3 - on the Evaporative Emission Canister Purge Regulator Valve (N80) and the connector - 5 - on the Mass Air Flow Sensor (G70).
- Disconnect the hoses - 1 -, - 4 -, - 6 -, - 7 -.
- Remove air filter housing by removing the expanding clip - 2 -.
- Remove coolant expansion tank - arrow -.
- Disconnect electrical wire from Engine Coolant Level (ECL) Warning Switch (F66) at bottom of coolant reservoir and set aside coolant reservoir with coolant hoses - 1 - and - 2 - connected.
- Disconnect the connectors - 2 - and - 5 - from the left mount on the bulkhead.
- Disconnect electrical connectors - 2 - and - 5 - and free up electrical wiring downward.
- Remove the front exhaust pipe/catalytic converter nuts - arrows -.
- Loosen quick-release fasteners - 1 - and - 2 - and remove front noise insulation.
- Remove quick-release fasteners - 3 - and remove rear noise insulation, if installed.
- Remove heat shield - 1 - for right drive axle.
- Remove nut - arrow - on the front exhaust pipe strap.
• Do not bend the flex joint in front of the exhaust pipe more than 10° or it could be damaged.
- Remove the threaded connections on the front clamping sleeves - arrows -.
- Push the clamping sleeve rearward to separate the exhaust system.
- Remove front exhaust pipe with catalytic converter.
Installing
Installation is in reverse order of removal, note the following:
• Replace gaskets and self-locking nuts.
- Align exhaust system free of tension. Refer to => [ Exhaust System, Aligning ] Procedures and => [ Exhaust System, Aligning ] Procedures.
Tightening Specifications
* Replace nuts.