Possible reasons for the automatic transmission tightening after changing the oil:
1. Inappropriate or low-quality automatic transmission fluid:
* Use only automatic transmission fluid recommended by your vehicle manufacturer.
* Poor quality fluid will not provide adequate lubrication and may cause tightening.
2. Insufficient fluid level:
*Low fluid levels create insufficient pressure in the system, resulting in slipping and dragging.
* Check the automatic transmission fluid level and, if necessary, add it to the recommended level.
3. Dirty automatic transmission filter:
* A dirty filter blocks the flow of automatic transmission fluid, creating additional stress on the system.
* Replace the filter when changing the fluid.
4. Problems with automatic transmission valves or solenoids:
* Faulty valves or solenoids can affect fluid pressure and gear shifting, causing drag.
*Diagnosis and repair may be required.
5. Mechanical problems:
* Worn clutches, broken gears or other mechanical components can cause tightening.
* To eliminate these problems, major repairs or replacement of the automatic transmission may be required.
6. Incorrect transmission settings:
* Incorrect shift cable adjustment or other transmission settings may result in difficult gear shifting.
*Check and adjust these settings if necessary.
7. Problems with electronics:
* A faulty speed sensor, transmission control module or other electronic components may affect the operation of the automatic transmission.
* Diagnose and repair any problems found.
8. Air in the automatic transmission system:
* Air in the automatic transmission system can create bubbles that interfere with fluid flow and gear shifting.
* Check for air and, if necessary, remove it by bleeding the automatic transmission system.
Recommended actions:
* Check the level and condition of the automatic transmission fluid.
* Replace the automatic transmission filter if necessary.
* Perform diagnostics to identify any potential problems with valves, solenoids or electronics.
*If the problem persists, contact a qualified mechanic for further diagnosis and repair.