What to Do When There is a Shock When Starting in D Gear with an AT Transmission?

[SanSimon]

Here is an introduction about the shock when starting in D gear with an AT transmission: 1. The engine speed is too high. For example, when the engine speed is too high during a cold start, the torque converter will transmit more power, resulting in a greater impact force and more noticeable shaking when shifting gears. 2. The brake is not pressed firmly. When shifting gears, the engine's power is directly transmitted to the wheels. If the brake is not pressed firmly, the wheels will slightly move, causing the vehicle to suddenly move forward with a strong shaking sensation. 3. Releasing the brake too early when waiting at a red light. When the light turns green, shifting into drive and releasing the brake to start moving can cause the vehicle to suddenly lurch forward violently. This happens because the brake is released too early, causing a sudden combination of power.