Is It Necessary to Clean the Three-Way Catalytic Converter?

2 Answers
Bell
07/24/25 7:58am
It is very necessary to clean the three-way catalytic converter. Generally, it needs to be cleaned every 30,000 kilometers or so. When you notice increased fuel consumption or a decrease in power, you should check the three-way catalytic converter and clean it as needed. Whenever you clean the fuel injectors, throttle body, and intake tract, it's best to clean the three-way catalytic converter at the same time. Before the annual vehicle inspection, it's advisable to clean the three-way catalytic converter to ensure a smooth pass in the emissions test. While driving, if you observe a significant lack of power or a noticeable weakening of acceleration, even under hard acceleration, it indicates an issue with the three-way catalytic converter, and it should be cleaned promptly.
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StLandon
08/11/25 3:39am
From my over a decade of driving experience, I believe cleaning the catalytic converter isn't an everyday necessity, but it can indeed be a lifesaver in specific situations. When the converter gets clogged, the car may exhibit symptoms like sluggish acceleration, skyrocketing fuel consumption, or even triggering the engine warning light. I've personally witnessed this happen to my old car - after cleaning, it restored smooth exhaust flow and even passed stringent emission tests. The key is to address early warning signs like slower exhaust flow or unusual noises promptly, otherwise it might damage the entire system. Prevention is better than cure, so I recommend regular checks of engine oil and air filters to prevent impurity buildup that could clog the converter. In summary, frequent cleaning isn't necessary, but automotive knowledge can save both money and headaches.
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