How Many Kilometers Should a Three-Way Catalytic Converter Be Cleaned?

[Charlie]

The three-way catalytic converter should be cleaned every 20,000 kilometers. The following situations also require cleaning the three-way catalytic converter: 1. When you notice increased fuel consumption and reduced power, check and clean the three-way catalytic converter as needed. 2. When performing maintenance such as cleaning the fuel injectors, throttle body, and intake tract, it is best to clean the three-way catalytic converter at the same time. 3. Before the annual vehicle inspection, it is advisable to clean the three-way catalytic converter to ensure passing the exhaust emission test smoothly. The effects of a clogged three-way catalytic converter are as follows: 1. The rear oxygen sensor sends a signal, causing the engine's fuel injectors to inject more fuel, and the engine warning signal indicates oxygen sensor poisoning. 2. Accompanied by a slight decrease in power and increased fuel consumption, the vehicle may fail the exhaust emission test during inspection. It can be removed, cleaned, and soaked on a lift.