What is the reason for the automatic transmission shaking uphill?

The automatic car vibrates uphill. When the gift box transmission is engaged, the engine generates torque. Slight shaking is normal. But if the vibration is serious, it may be because the throttle is dirty, the fuel injector has too much carbon deposit and the spark plug is not good. If there is too much carbon deposit in the engine, the gasoline sprayed by the fuel injection head will be absorbed by the carbon deposit in a large amount during cold start, which will lead to too thin mixture and poor intake during start-up, resulting in jitter, which will make it very difficult to start the engine. Only when the gasoline absorbed by carbon deposits is saturated can the car catch fire easily. If the spark plug is not good or the high-voltage line is broken and burned out, the engine will run unsteadily and shake. The oil pressure in the oil circuit is too low to keep up, which will lead to uneven operation of each cylinder of the engine, or the battery voltage is not in the normal range, and the gearbox does not work, which will make the vehicle shake. Vehicles should be maintained regularly, and gas and oil circuits should be kept clean, including air grille, throttle valve and fuel injector. Million car purchase subsidy