Removing The Three-Way Catalytic Converter (TWC)

Fig 1: Front Exhaust Pipe And Turbocharger

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove: 

• the wiring for the front heated oxygen sensor (HO2S) from the clips and clamps. Separate the wiring. Raise the car
• the lower engine cover
• the front SIPS member. Unhook the brake pipe from the clips
• the lower screw in the heat deflector plate on the turbocharger (TC)
• the nuts for the flange between the turbocharger (TC) and the three-way catalytic converter (TWC).

HINT: Use rust solvent or similar. 

Fig 2: Identifying Rubber Mounting For The Three-Way Catalytic Converter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove: 

• the rubber mounting for the three-way catalytic converter (TWC)
• the nuts for the flange between the three-way catalytic converter (TWC) and exhaust system
• the wiring for the rear heated oxygen sensor (HO2S) from the clips and clamps. Separate the wiring
• the three-way catalytic converter (TWC).