how to tell if my Honda Pilot's catalytic converter is failing

Solution

1. Preparation

• Tools Required: OBD-II scanner, temperature gauge, basic socket set, jack and jack stands.
• Gather replacement parts if necessary, including a new catalytic converter and gaskets.

2. Raise the Vehicle

• Use a jack to lift the vehicle and secure it with jack stands.
• Ensure the vehicle is on a flat surface and the parking brake is engaged.

3. Remove the Old Catalytic Converter

• Locate the catalytic converter along the exhaust system.
• Disconnect the oxygen sensors attached to the catalytic converter (if equipped).
• Remove the bolts securing the catalytic converter to the exhaust pipes using a socket set.
• Carefully detach the catalytic converter from the exhaust system.

4. Inspect and Clean

• Inspect the exhaust flanges for damage or warping. Clean the surfaces to ensure a proper seal.
• Check the oxygen sensors for any signs of wear; replace if necessary.

5. Install New Catalytic Converter

• Position the new catalytic converter in place and align it with the exhaust pipes.
• Secure the catalytic converter using the appropriate bolts, ensuring they are tightened to the manufacturer’s specified torque (usually around 25-35 ft-lbs).
• Reconnect the oxygen sensors to the new catalytic converter.

6. Lower the Vehicle and Test

• Remove the jack stands and lower the vehicle back to the ground.
• Start the engine and allow it to warm up. Check for exhaust leaks around the installation area.
• Perform a test drive to ensure the vehicle operates smoothly and the check engine light does not reappear.