What Causes Shaking When Shifting Gears in an Automatic Transmission?

[DelCarlos]

Automatic transmission shaking when shifting gears occurs for the following reasons: The reason why the car body shakes violently after shifting gears in an automatic transmission car is that the gear oil in the transmission is relatively viscous and dense, and the transmission part receives the power from the engine more noticeably, causing the car to shake significantly. Once the car starts moving, the temperature of the gear oil in the transmission rises, the gear oil becomes thinner, and the density decreases, improving the situation. Additional information: The low-speed gear transmission in automatic transmission cars is almost entirely hydraulic, not gear-driven. During the first gear shift, since the car has been stationary overnight, the gear oil in the transmission is relatively viscous and dense, and the transmission part receives the power from the engine more noticeably, causing the car to shake significantly.