Possible causes of jerking when switching automatic transmission in Hyundai:
1. Faulty automatic transmission oil:
* Contaminated or burnt-out transmission oil can cause problems with the torque converter.
*Low oil level can also cause jerking.
2. Problems with solenoids:
* Faulty shift solenoids can cause improper fluid pressure in the clutch packs, causing jerking.
3. Malfunctions in the torque converter:
* A clogged or damaged torque converter can affect the transfer of power from the engine to the transmission, causing jerking.
4. Problems with the automatic transmission control unit (TCU):
* A faulty TCU may not properly control gear shifts, resulting in jerking.
5. Problems with the electrical system:
*A weak battery or faulty sensors can cause shifting problems.
6. Mechanical faults:
* Worn or damaged parts in the transmission, such as clutch packs or gears, can cause jerking.
Diagnostics and troubleshooting:
* Checking the level and condition of automatic transmission oil: Check the level and condition of the oil and replace it if it is dirty or burnt out.
*Diagnosing Solenoid Faults: Use a trouble code scanner to check shift solenoid codes.
* Torque Converter Diagnostics: Perform a torque converter slip test to check its functionality.
* TCU Check: Perform diagnostics on the automatic transmission control unit to rule out any malfunctions.
* Electrical system check: Check the condition of the battery and any faulty sensors.
* Mechanical Inspection: Check the transmission for worn or damaged parts and replace them if necessary.
Important: Do not ignore shifting jerks as they may indicate serious problems that can lead to costly repairs. Consult a qualified mechanic as soon as possible to diagnose and repair the problem.