how do I know if my Toyota RAV4’s catalytic converter is bad

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface with the engine off and cooled down.
• Disconnect the battery to prevent electrical shocks.

2. Remove the Catalytic Converter

• Tools Required: Socket set, torque wrench, penetrating oil (if bolts are rusted)
• Locate the catalytic converter under the vehicle.
• Apply penetrating oil to the bolts securing the catalytic converter to the exhaust system.
• Using the socket set, carefully remove the bolts. If necessary, use a torque wrench to measure the torque on reassembly.
• If your vehicle has oxygen sensors attached to the catalytic converter, remove them carefully prior to extraction.

3. Inspect and Clean

• Inspect the catalytic converter for physical damage, such as cracks or a collapsed structure.
• If the converter is clogged, consider cleaning it or replacing it if severely damaged.

4. Install New or Repaired Converter

• Tools Required: New gaskets (if needed), torque wrench
• Position the new or cleaned catalytic converter in place.
• Reattach it to the exhaust system and secure it with the bolts.
• If removed, reconnect the oxygen sensors, ensuring they are properly seated.

5. Reconnect Battery and Test

• Reconnect the battery.
• Start the vehicle and allow it to idle. Listen for unusual noises and check for leaks.
• Take the vehicle for a test drive to ensure normal operation and check for any warning lights.