What Causes Severe Shaking When Shifting to R Gear in an Automatic Transmission?

[SanElijah]

The reasons for severe shaking when shifting to R gear in an automatic transmission are: 1. Low idle speed; 2. Dirty throttle body; 3. Dirty fuel injectors; 4. Severe engine carbon buildup; 5. Poor spark plug performance. It is normal for automatic transmission vehicles to experience slight shaking when shifting gears, as the clutch differential is engaged and the engine generates torque. However, it is important to note that the vehicle must be completely stopped before shifting gears. When reversing, the direction of power transmission needs to change. Shifting gears without stopping the vehicle can cause noise in the transmission and may even severely damage it. An automatic transmission eliminates the need for the driver to manually shift gears, as the vehicle automatically selects the appropriate gear based on driving speed and traffic conditions. Typically, automatic transmission vehicles have six gear positions, arranged from top to bottom as: P, R, N, D, S, L.