How to Determine if the Three-Way Catalytic Converter is Clogged?

[MacPaisley]

Methods to determine if the three-way catalytic converter is clogged: 1. Check if the voltage of the front and rear oxygen sensors of the three-way catalytic converter is the same; if they are the same, it indicates a blockage. 2. Place your hand near the exhaust pipe to see if you can feel airflow; if not, it suggests a blockage. 3. Remove the air filter and quickly press the accelerator while stationary, observing if black smoke comes out from the air filter. 4. Feel the temperature difference between the front and rear of the three-way catalytic converter to determine if it is clogged. 5. During a test drive, if the vehicle cannot reach higher speeds and acceleration is poor, it may indicate a blockage. The three-way catalytic converter is an important external purification device installed in the vehicle's exhaust system, converting harmful gases such as carbon monoxide, hydrocarbons, and nitrogen oxides emitted by the vehicle into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions.