How to Determine if the Catalytic Converter is Faulty?

[LukasLynn]

Methods to determine if the catalytic converter is faulty: 1. The malfunction indicator light is on; 2. Poor acceleration and high fuel consumption; 3. Shake the oxygen sensor and listen for any rattling sounds inside. Causes of catalytic converter blockage include: 1. Fuel with high sulfur content; 2. Long-term use of engine oil containing sulfur and phosphorus antioxidants; 3. Incomplete combustion products are most likely to form during acceleration and deceleration, especially when driving frequently in congested traffic. The catalytic converter is an important external purification device installed in the vehicle's exhaust system, which converts harmful gases emitted from the exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. When high-temperature exhaust gases pass through the purification device, the catalyst in the catalytic converter enhances the activity of the gases, promoting specific oxidation-reduction chemical reactions. Carbon monoxide is oxidized into colorless, non-toxic carbon dioxide gas at high temperatures; hydrocarbons are oxidized into water and carbon dioxide; and nitrogen oxides are reduced into nitrogen and oxygen.