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How to Change a Catalytic Converter in an 1989 Nissan Pathfinder

Removing the catalytic converter from your Nissan Pathfinder allows for the replacement of it without having to replace other parts of the exhaust system. The converter is designed to reduce harmful emission or cases out the tailpipe of your Nissan, and if it is not working correctly, it needs to be replaced. A plugged converter may become very hot and often will cause the engine to run rough as well as producing an extremely unpleasant odor from the tailpipe.

Instructions

1

Place a jack under the front of your Pathfinder and raise it off the ground. Position a set jack stands under the front suspension to support the truck, then remove the jack for now.

2

Locate the catalytic converter from under the truck. It is in the exhaust system just below the drivers feet. Remove the two bolts in the rear flange that hold the exhaust pipe to the rear flange of the converter using a wrench.

3

Move to the front flange of the catalytic converter and remove the three retaining bolts with a wrench. Lower the catalytic converter and remove it from under the truck.

4

Raise a new catalytic converter into position and align the mounting flanges with the flanges on the exhaust pipes. Install the three front mounting bolts into the flange and tighten them with a wrench. Install the two mounting bolts into the rear flange and tighten them with a wrench.

5

Position the jack under the front of your Pathfinder and raise it off the jack stands. Remove the jack stands, then lower the Pathfinder to the ground.

Posted by Unknown at 10:30 PM

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