infiniteblackjack| How to judge whether the three-way catalytic converter of a car has failed?

automobileinfiniteblackjackThe three-way catalyst is an important part of the vehicle emission control system. It is responsible for converting harmful exhaust components into harmless or less harmful substances, and plays an important role in environmental protection and vehicle performance. When problems occur with the three-way catalyst, it may not only affect the performance of the vehicle, but may also lead to excessive exhaust emissions and face penalties from environmental regulations. Therefore, it is very necessary for car owners to understand how to judge whether the three-way catalyst has failed.

Observe the tail smell

When the three-way catalyst is working normally, the gas discharged from the exhaust pipe should be colorless or slightly light blue. If the exhaust appears heavy black, white or blue with a stench, it may be a signal that there is a problem with the three-way catalyst. Black exhaust gas may be caused by incomplete fuel combustion, while white exhaust gas may be caused by coolant entering the engine and burning. Both of these may affect the normal operation of the three-way catalyst.

Check engine performance

If the vehicle has problems such as poor acceleration and abnormal increase in fuel consumption, it may also be related to the failure of the three-way catalyst. Blocking of the three-way catalyst can affect the flow of exhaust gas, thereby reducing the efficiency and power performance of the engine. Regular engine performance testing can detect these abnormalities in a timely manner.

Check engine fault light

Hyundai cars are usually equipped with a fault self-diagnosis system. When a problem occurs with the three-way catalyst, the system will issue a warning through an engine fault light. If the engine fault light is found to be on, you should go to the maintenance station for testing in time to avoid further deterioration of the problem.

Observe the engine tachometer

During smooth driving, if the engine tachometer fluctuates irregularly, it may also be a sign of three-way catalytic converter failure. The blockage of the three-way catalyst will cause poor exhaust gas, which will affect the normal operation of the engine.

check oxygen sensor

Oxygen sensor is an important component for monitoring engine combustion efficiency, and its performance directly affects the working effect of three-way catalytic converter. If the oxygen sensor fails, it will cause abnormal fuel mixing ratio, which will affect the normal operation of the three-way catalyst. Regularly checking the working status of the oxygen sensor can help prevent problems with the three-way catalyst.

Compare maintenance costs

Due to the high price of three-way catalysts, if serious problems occur, the replacement cost may be more expensive. Car owners can use the following table to understand the cost comparison of different maintenance options to make more informed decisions.

To sum up, by observing the exhaust color, detecting engine performance, paying attention to fault lights, observing the engine tachometer, and checking the oxygen sensor, car owners can more accurately determine whether the car's three-way catalyst has failed. Once a problem is discovered, corresponding maintenance measures should be taken in time to avoid causing greater losses.

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