how to fix the catalytic converter issue on my Toyota Corolla E140 (2006-2013)?

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Remove the Existing Catalytic Converter

• Tools Required: Socket set, wrench set, penetrating oil, exhaust pipe cutter (if necessary)
• Spray penetrating oil on the bolts connecting the catalytic converter to the exhaust system to ease removal.
• Remove the bolts securing the catalytic converter to the exhaust manifold and the rear exhaust pipe. If the bolts are rusted, use an exhaust pipe cutter if necessary.
• Carefully detach the catalytic converter from the exhaust system, ensuring not to damage surrounding components.

3. Install New Catalytic Converter

• Parts Required: New catalytic converter, new gaskets, and possibly new bolts.
• Position the new catalytic converter in place, ensuring the inlet and outlet align properly with the exhaust manifold and rear exhaust pipe.
• Install new gaskets (if applicable) and secure the catalytic converter with bolts to the exhaust system, tightening them to the manufacturer's specified torque values (typically between 20-30 lb-ft).

4. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to warm up. Check for any exhaust leaks around the newly installed catalytic converter.
• Monitor the engine for any warning lights and ensure the vehicle runs smoothly.