What is the purpose of cleaning a car's three-way catalytic converter?

1 Answers
CharlieFitz
07/29/25 11:33pm
The purpose of cleaning a car's three-way catalytic converter is: 1. To help improve the performance of the vehicle's engine; 2. To reduce frequent alarms from the exhaust system's oxygen sensor. The three-way catalytic converter is an important external purification device installed in the car's exhaust system, which can convert carbon monoxide, hydrocarbons, and nitrogen oxides emitted from the car's exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. The steps for cleaning the three-way catalytic converter are: 1. Use a lift to raise the vehicle and remove the three-way catalytic converter; 2. Soak and clean the three-way catalytic converter with an oxalic acid solution, then rinse it with clean water; 3. Reinstall the cleaned three-way catalytic converter and start the vehicle for a test run.
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