Volkswagen polo will idle when refueling at 2000 rpm. What happened?

According to the inquiries of car home and SAIC Volkswagen official website, Volkswagen polo may idle at 2000 rpm for the following reasons:

1. Transmission failure: If it is an automatic polo, the clutch plate, oil seal, valve body and other components inside the transmission may be worn or damaged, resulting in insufficient oil pressure in the transmission, which makes it impossible to shift gears normally and idle.

2. Throttle fault: If it is a manual shift polo, it may be that there is too much carbon deposit in the throttle, which leads to inaccurate throttle opening, which affects the intake of the engine and leads to idling.

3. Other reasons: It is also possible that the engine computer, spark plug, fuel injector, oxygen sensor and other components are faulty, resulting in unstable engine operation and idling.