What are the precursors of damage to a car's three-way catalytic converter?

1 Answers
VanAugust
07/30/25 2:41am
The precursors of damage to a car's three-way catalytic converter are: 1. Unpleasant exhaust odor; 2. Engine overheating and early excessive wear; 3. Engine power loss and abnormal noises. The three-way catalytic converter is an external purification device installed in the car's exhaust system, which converts harmful carbon monoxide, hydrocarbons, and nitrogen oxides emitted from the car's exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. The causes of three-way catalytic converter damage are: 1. Blockage due to sintering of ethanol gasoline gum deposits, sulfur-phosphorus chemical complexes, lead-manganese metal deposits, or melting and blockage of the ceramic carrier caused by engine exhaust flames; 2. Loss of activity of the surface precious metals, rendering them unable to catalyze; 3. Prolonged exposure of the three-way catalytic converter to high temperatures, leading to thermal deactivation.
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