How to Solve the Problem of Clogged Three-Way Catalytic Converter?
4 Answers
Solutions for clogged three-way catalytic converter: 1. Cleaning: During vehicle operation, exhaust gases from combustion can clog the three-way catalytic converter. Excessive clogging by impurities can reduce the converter's efficiency. Cleaning the converter to remove the clogged materials can restore its normal function. 2. Replacement: If cleaning does not restore normal function, replacement is necessary. The three-way catalytic converter is a device that converts harmful gases such as CO, HC, and NOx from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. The core component of the three-way catalytic converter is a porous ceramic material installed in a specially designed exhaust pipe. The ceramic material itself does not participate in the catalytic reaction but is coated with precious metals such as platinum, rhodium, palladium, and rare earth coatings.
I remember last time when my catalytic converter got clogged, the car felt particularly sluggish, with no power when stepping on the gas pedal, accompanied by a whining noise from the engine. That day on the highway, I tried coasting in neutral and then revving the engine, hoping the hot exhaust would flush out the blockage, but the symptoms didn't improve. It got worse over time, leading to a sharp increase in fuel consumption. Eventually, I had to tow it to the repair shop, where the mechanic fixed it with professional cleaning fluid. Otherwise, it could have caused more problems like excessive emissions or engine damage. My advice is: if you encounter similar issues, don't tough it out. After trying simple fixes yourself, go to a professional mechanic immediately. Delaying will only make repairs more expensive. For prevention, regular oil changes and using high-quality gasoline can reduce the risk of clogging.
A clogged catalytic converter is a real headache. I went through it last year - the car's power dropped sharply, and it felt like an old ox pulling a cart when starting. The repair costs aren't cheap, with cleaning costing around 300-500 RMB, and replacement of a severely clogged one potentially running over a thousand. I recommend first using a diagnostic tool to read the fault codes and confirm the issue, then try adding a cleaning additive to the fuel tank for a drive - sometimes this can clear the blockage and save money. If that doesn't work, then take it to the shop. For prevention, using genuine engine oil and avoiding short trips helps a lot - complete engine combustion reduces carbon buildup. This approach saves both money and hassle. Don't wait until it worsens to deal with it, as that costs more and ruins the driving experience.
A clogged catalytic converter poses safety hazards, such as slow acceleration or sudden engine stalling. I personally experienced difficulty overtaking on the highway. Professional solutions are a must—don't attempt DIY fixes. Immediately visit a 4S shop or repair center for inspection. Mechanics can usually resolve it through disassembly or chemical cleaning, and in severe cases, replacement parts may be covered by insurance. Delaying repairs can lead to excessive exhaust emissions or engine overload, risking accidents—especially dangerous with elderly or children in the car. Safety first—avoid risky folk remedies. Professional handling is the only correct choice.
