Possible causes of impact when turning on the speed in the automatic transmission:
Mechanical problems:
* Friction Plate Wear: Over time, the friction plates in the transmission wear out, causing slippage when the transmission is engaged.
*Transmission Damage: Serious damage such as broken gears or bearings may cause shocks when shifting into gear.
*Low Transmission Fluid Level: Insufficient fluid level can result in insufficient pressure and shock when shifting gears.
* Contaminated Transmission Fluid: Contaminants in the fluid can prevent the transmission from operating properly and cause knocks.
Hydraulic problems:
* Valve block malfunction: The valve block is responsible for regulating the fluid flow in the transmission. A malfunction may result in incorrect gear shifting and shock.
* Faulty solenoids: The solenoids control the valves in the valve body. Failure to do so can result in shifting problems and knocks.
Electrical problems:
* Input Shaft Sensor Failure: The input shaft sensor provides the ECU (Electronic Control Unit) with engine speed information. A malfunction may result in incorrect gear shifting and shock.
* Output Shaft Sensor Malfunction: The output shaft sensor provides the ECU with information about the rotational speed of the transmission output shaft. A malfunction can result in gear shifting problems and knocks.
Other possible reasons:
*Engine wear: A worn engine can cause shock to be transmitted to the transmission, resulting in a shock when shifting into gear.
* Torque Converter Malfunction: The torque converter transfers power from the engine to the transmission. A malfunction may result in shocks when the speed is turned on.
* Incorrect transmission adaptation: Modern automatic transmissions adapt to individual driving style. Incorrect adaptation can lead to shifting problems and bumps.