In actual use, if the car has problems such as increased fuel consumption, weak acceleration, difficulty in speed improvement, or even difficulty in starting, the working condition of the ternary catalyst should be checked. Usually, the normal fuel consumption and power can be restored after cleaning or dredging the ternary catalyst.

Secondly, when the driver finds the following symptoms, it also indicates that the catalyst is not working well, and he should go to the 4S store for maintenance in time.

1. Soon after the vehicle starts, there will be an obvious red burning phenomenon between the exhaust manifold and the ternary catalyst;

2. When the vehicle is refueling door, you can hear the sound of "hissing" leakage or "gurgling" and other abnormal sounds;

3. You can smell a pungent and smelly smell when idle or accelerated. If the exhaust gas analysis is carried out, it will be found that the nitrogen oxide (NOx) seriously exceeds the standard, and it should be cleaned and repaired in time;

4. In the normal working ternary catalyst, the temperature in the front of the catalyst is lower than the temperature in the back. If the temperature in the front part of the ternary catalyst is higher than the temperature in the rear, it means that the catalyst is not working well.