What's the abnormal sound of the automatic refueling door of Volvo xc90 engine?

Cause of abnormal sound of the automatic refueling door of Volvo xc90 engine in Pacific Auto Network: 1. Too much carbon deposit in the engine, too much carbon deposit in the throttle and too much carbon deposit in the spark plug. 2. The air filter element is too dirty; 3. The purity of the engine oil filled in the car is not enough; 4. The spark plug is aging.

If the engine warning light is on or flashing, it means that the engine control unit has detected that the signal of one sensor of the engine is inaccurate or the engine is in poor combustion condition, which exceeds the fault source range. Therefore, in order to accurately judge the fault source, it is suggested to go to the repair shop to analyze the frozen data flow and fault code of the engine control unit with the help of the maintenance diagnostic instrument, and then carry out maintenance according to the judgment technical report.

The reason why Volvo xc90 engine lights up:

1, when the engine light is on, it indicates that the engine has a fault, which can be divided into accidental fault and persistent fault. The occasional lighting of the fault light is an accidental fault and can be used continuously. Generally, this situation is mainly related to emissions. You can try changing the gas station to refuel first, which is probably caused by oil problems.

2. If the fault light continues to light up and the vehicle is obviously abnormal in use, you should immediately go to the 4s shop for on-site maintenance;

3. For this car, it is recommended to change the gas station first, and then run the expressway. If the expressway is driven, the fault light will light up.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)