Catalytic Converter: Service and Repair

REMOVAL
^ Raise vehicle.
^ Disconnect heated oxygen sensors at wiring harness connectors.
^ Disconnect air inlet tube from the dual converter and pipe.
^ Remove dual converter and pipe to exhaust manifold retaining nuts.
^ Remove muffler inlet flange to dual converter and pipe outlet flange retaining nuts.
^ Support dual converter and pipe with a suitable jackstand and remove exhaust converter frame bracket to dual converter and pipe retaining nuts.
^ Remove dual converter and pipe from vehicle and replace any damaged parts.

INSTALLATION
^ Loosely install dual converter and pipe and support with a suitable jackstand.
^ Install dual converter and pipe onto exhaust converter frame bracket and install retaining nuts. Tighten retaining nuts to 23.3-31.7 Nm (17-23 ft lb).
^ Position dual converter and pipe to exhaust manifold studs and install retaining nuts. Do not tighten nuts.
^ Position muffler inlet flanges to dual converter and pipe outlet flanges and install retaining nuts. Do not tighten nuts. Remove jackstand.
^ With exhaust system aligned, tighten dual converter and pipe-to-exhaust manifold nuts to 34-46 Nm (25-34 ft lb), and muffler inlet flange-to-dual converter and pipe outlet flange retaining nuts to 29.7-40.3 Nm (22-30 ft lb).
^ Attach air inlet tube to dual converter and pipe. Tighten clamp securely.
^ Connect heated oxygen sensors at wiring harness connectors.
^ Check system for leaks and lower vehicle.