Possible causes of jerking when shifting Volvo automatic transmission:
1. Low or old transmission fluid:
* Check the fluid level and add or replace if necessary.
2. Worn or dirty filters:
* The automatic transmission filter is responsible for cleaning the fluid from debris. Replace the filter according to the service manual.
3. Worn clutch friction discs:
* Friction discs are used to engage gears. Over time, they can wear out, causing slipping and jerking.
4. Faulty solenoids:
* Solenoids control the flow of fluid into the automatic transmission. Malfunctioning solenoids can result in incorrect gear shifts.
5. Faulty valve body:
* The valve body controls the fluid flow into the automatic transmission. A faulty valve body can lead to surges in fluid pressure, causing jerking.
6. Faulty vehicle speed sensor:
* The vehicle speed sensor sends information to the automatic transmission about the current vehicle speed. A faulty sensor can result in incorrect gear shifts.
7. Electronic problems:
* Problems with the wiring or transmission control module can cause the transmission to malfunction.
How to eliminate jerking when shifting a Volvo automatic transmission:
* Start by checking the transmission fluid level and condition.
*If the problem persists, contact a qualified mechanic for further diagnosis.
* A mechanic can use an OBD-II scanner to check for trouble codes that may indicate a specific problem.
* Damaged components such as clutch friction plates, solenoids or valve body may need to be repaired or replaced.
* In severe cases, major repairs or replacement of the automatic transmission may be required.