Three-Way Catalytic Converter (TWC), Replacing: Preparation

Fig 1: Engine And Stabilizer Brace

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove the splash guard from under the engine.

Remove: 

• the connectors for the heated oxygen sensors (HO2S)
• the wiring for the heated oxygen sensors (HO2S) from the mountings
• the screw for the mounting for the engine stabilizer brace on the engine
• the engine stabilizer brace between the suspension turrets
• the plastic charge air pipe. Place to one side
• the plastic intake pipe. Put it to one side.