How to Clean a Three-Way Catalytic Converter?
2 Answers
A three-way catalytic converter can be cleaned as follows: 1. Start the engine and wait until the coolant temperature reaches normal operating levels before shutting it off; 2. Pour the cleaning product into a specialized device and connect the device's output connector to the vacuum hose; 3. Restart the engine, maintain the RPM at around 2000, open the flow control valve, and slowly drip the product into the intake manifold over a period of approximately 30 minutes; 4. After cleaning, keep the engine running at the same RPM for 3-5 minutes to expel any residual liquid. Below is an introduction to the three-way catalytic converter: The three-way catalytic converter is an emission control device in the engine. Its proper functioning determines the engine's fuel consumption, power output, and emission levels. If it becomes clogged or malfunctions, exhaust emissions will exceed standards. Additionally, it can affect engine performance, commonly manifested as increased fuel consumption, sluggish acceleration, unusual exhaust noises, and foul-smelling emissions.
I have some practical tips for cleaning the three-way catalytic converter, mainly by using professional cleaning agents. First, park the car on a flat surface and wait for the engine to cool down. Then, open the fuel tank cap and pour in a bottle of catalytic converter cleaner that matches your vehicle model. After sealing the cap, start the engine and drive for about 40 minutes, preferably on a highway to let the high-speed heat melt away carbon deposits and dirt. Remember not to clean it too frequently—once every 20,000 kilometers is usually sufficient, as over-cleaning can damage the internal structure of the converter. In terms of results, you'll often notice improved power and cleaner exhaust emissions after cleaning. The process is simple and doesn't require professional tools, but it's important to choose reputable products and follow the dosage instructions to avoid risks like clogging or leaks. For regular maintenance, using high-quality gasoline to prevent impurity buildup and periodically inspecting the exhaust system can help extend the catalytic converter's lifespan. Address any issues promptly to ensure longevity.
