In the original equipment systems, the muffler and exhaust tailpipe are welded, while service replacement parts are usually clamped or welded together. While dealing with the exhaust system, make sure to disconnect the oxygen sensor connector to avoid harming either the wiring or the sensor. You should raise and hold the vehicle in a safe position first, then take off the front tailpipe hanger from the insulator and remove the front clamp clamping the
Catalytic Converter and muffler together. Set the heat from an oxyacetylene torch on the joining between the exhaust muffler/tailpipe and catalytic converter until the connection is cherry red, then take the exhaust muffler/tailpipe assembly off the catalytic converter. Slide the assembly away from the rear of the vehicle beyond the point of the rear exhaust tailpipe bracket. For original equipment, close the tailpipe using a snip just ahead of the muffler, crumple the remaining part in the muffler and take it out. When using service exhaust tailpipes, apply heat to the joint between the pipes and muffler, remove the clamp and twist them out of each other. Set the muffler above the catalytic converter, then install and tighten the clamp just a little with your fingers. Slide the tailpipe into the other end of the muffler and position the assembly on the exhaust tailpipe mounting bracket at the rear, keeping it raised from the floor pan. Put the front tailpipe hanger back in place, line up the muffler and tighten the nuts on the muffler-to-catalytic converter clamp to 61 Nm (45 ft. lbs.). Misalign your tailpipe, replace the old clamp with a new one and tighten the new clamp to 61 Nm (45 ft. lbs.). After that, lower down the car, start the engine, check for any leaks in the exhaust and make sure there is no contact between the exhaust and the body panels, adjusting the alignment again if needed.