A normal car will be equipped with a three-way catalytic converter,which is called catalytic converter as well. It is a device installed between the rear end of the exhaust manifold of the engine and the end of the muffler. Its scientific name is a three-way catalytic converter, commonly known as a three-way part， environmental protection device. So if the three-way catalytic converter is broken, what effect will it have on the car? We will give you the answer today!
1. The car makes abnormal noise
The first phenomenon is that if the three-way catalytic converter is bumped and dragged to the bottom, it may cause crushing, breaking, and some abnormal noises. When the car is on the spot or the fuel is on the spot, there will be some booming noises.
2. The engine fault light is on
If the conversion efficiency of the three-way catalytic converter is low or fails, all you can see is that the engine fault light will come on. The fault code may be P0420 or P0421, and it is reported that the conversion efficiency of the three-way catalytic converter is low. At this time, we need to replace it.
3. Insufficient power and poor acceleration
Secondly, there is another possibility that if the honeycomb-shaped ceramics inside the three-way catalytic converter are damaged by inferior engine oil or inferior gasoline, the honeycomb will be killed. This will cause poor exhaust and affect the intake air volume. The feeling given to the car owner is that the vehicle has insufficient power and poor acceleration, and it will obviously feel "not strong" when climbing a hill.
4. Exceeding the exhaust emission standard
The three-way catalytic converter can convert harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. If the three-way catalytic converter is broken, high nitrogen oxides or high carbon monoxide will be found during the vehicle inspection.
5. Increased fuel consumption
A broken three-way catalytic converter will affect the normal operation of the oxygen sensor, and the accuracy of the engine receiving the signal from the oxygen sensor will decrease, so that the fuel injection, intake air and ignition cannot be accurately controlled, resulting in an increase in fuel consumption of the vehicle.
What are the precautions for the use of three-way catalytic converters?
If you want the conversion efficiency of the three-way catalytic converter to be higher and the use time to be longer, then you must pay attention to the following points when using the car daily:
1. Do not use gasoline with high lead content;
2. Do not run at high speed for a long time;
3. Do not let the engine speed fluctuate;
4. The ignition time should not be too late;
5. Don't fail to start for a long time;
6. Do not pull out the high voltage line for a long time to test the fire;
7. When measuring the cylinder pressure, unplug the central control connector of the fuel pump, so as to stop the injector from injecting fuel into the cylinder;
8. When a cylinder is found to be working poorly, it should be stopped in time to check and troubleshoot;
9.Avoid many factors that cause the mixture to be too rich, such as the fuel injector is not closed tightly, the fuel pressure regulator fails (the oil pressure is too high), the oxygen sensor fails, the air flow sensor fails, etc.;
10. The catalytic converter is used correctly and generally does not require maintenance, so do not disassemble it casually. If it really needs to be replaced, choose the model that matches the engine.
Post time: Mar-09-2023