Possible causes and solutions to the problem of speed jumps when shifting automatic transmission gears:
1. Low transmission fluid level:
* Check the transmission fluid level and add it if necessary.
* It is recommended to use the type and volume of fluid recommended by the manufacturer.
2. Contaminated transmission fluid:
* Transmission fluid becomes contaminated over time, which can lead to gear slippage and speed fluctuations.
* It is recommended to change the transmission fluid and filter according to the maintenance schedule.
3. Worn transmission parts:
* Worn friction discs, bands or other transmission components can cause slipping and RPM jumps.
*Damaged parts may need to be repaired or replaced.
4. Problems with sensors or electronics:
* Sensors such as the input or output shaft speed sensor may not transmit information correctly, resulting in improper gear shifting.
* May require diagnosis and repair or replacement of faulty sensors or electronic components.
5. Malfunction of solenoids:
* The solenoids that control the flow of transmission fluid can fail, causing the transmission to malfunction.
*Faulty solenoids may need to be replaced.
6. Problems with the torque converter:
* The torque converter, which connects the engine and transmission, can fail, causing slippage and RPM jumps.
*The torque converter may need to be repaired or replaced.
7. Software problems:
* Modern automatic transmissions have a control unit that controls gear shifting.
* Software problems may cause the transmission to not operate properly.
* Reprogramming or software update may be required.
Important:
*If you encounter a problem with RPM jumps, do not ignore it.
*Continuing to drive a vehicle with this problem may result in more serious damage and costly repairs.
*Consult a qualified mechanic to diagnose and repair the problem as soon as possible.