Mechanical reasons:
* Low or contaminated transmission fluid: Insufficient or contaminated transmission fluid can cause lubrication problems and overheating of automatic transmission components.
* Worn or damaged clutches: Clutches are the main components that transmit power to the automatic transmission. Their wear or damage can lead to slipping and «jerking».
* Torque Converter Problems: The torque converter provides smooth gear shifting. Malfunctions in its operation may manifest themselves in the form of “jerking.”
* Worn or damaged gears: The gears in an automatic transmission must be in good condition to transmit power correctly. Their wear or damage can cause noises and «jerking.»
* Faulty solenoids: Solenoids control the flow of transmission fluid into the automatic transmission. Their malfunction may interfere with the smoothness of gear shifting.
Electrical reasons:
* Faulty electronic control unit (automatic transmission ECU): The ECU controls the operation of the automatic transmission and can cause problems with gear shifting.
* Faulty Speed Sensors: Speed sensors help the ECU detect the vehicle’s speed and shift gears accordingly. Their malfunction can lead to incorrect switching points and «jerking».
* Wiring Problems: Damaged or incorrectly connected wiring can interfere with the transmission of signals between automatic transmission components.
Other reasons:
* Faulty transmission mount: The transmission mount supports the automatic transmission and dampens vibrations. Its malfunction can transmit vibrations to the car body, causing “jerking.”
* Faulty Engine Mounts: Engine mounts isolate the engine from the vehicle body. Their malfunction may allow vibrations to be transferred from the engine to the automatic transmission, causing “jerking.”