Catalytic Converter: Service and Repair

Catalytic Converter

Removing

- Remove engine cover - arrows -.





- Remove coolant expansion tank - arrow - and set it aside with coolant hoses attached.





- Disconnect electrical connector - 1 - for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) ( G130) and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) (Z29) (brown connector) and free up electrical wiring to catalytic converter.





- Disconnect electrical connector - 2 - for Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19) (black connector) and free up electrical wiring to catalytic converter.

- Disconnect intake hose - 1 - for air filter/turbocharger.





- Disconnect electrical harness connector - 2 - at Mass Air Flow (MAF) Sensor (G70).

- Free up wiring harness on air filter housing and remove air filter housing - 3 -.

• Exhaust system decoupling element must not be bent more than 10°, otherwise it may be damaged.

- Loosen clamping sleeve - arrow - and push it rearward.





- Separate front exhaust pipe/catalytic converter - arrows -.





- Remove bolt - 1 - at bracket for front exhaust pipe and remove front exhaust pipe.

- Remove nut - arrow - at catalytic converter/turbocharger from below.





- Remove nuts - arrows - at catalytic converter/turbocharger from above.





- Take catalytic converter up and out.

Installing

Installation is in reverse order of removal, note the following:

• Replace gaskets and self-locking nuts.

- Install exhaust system free of stress. Refer to => [ Exhaust System, Installing ] Exhaust System, Installing.

Tightening Specifications