why does my Volvo XC90’s transmission jerk when shifting?

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, fluid catch pan, multimeter, flashlight, torque wrench.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the battery to ensure safety while working on electrical components.

2. Transmission Fluid Change

• Sub-steps:
  1. Remove the transmission fluid pan using a socket set to access the filter.
  2. Drain the old transmission fluid into a catch pan and inspect for metal shavings.
  3. Replace the transmission filter with a new one.
  4. Reinstall the fluid pan and torque the bolts to the manufacturer's specifications.

3. Replace Transmission Solenoids (if necessary)

• Sub-steps:
  1. Gain access to the transmission solenoids by removing the transmission housing cover.
  2. Disconnect the electrical connectors from the solenoids.
  3. Remove the old solenoids and install the new ones, ensuring they are seated correctly.
  4. Reconnect the electrical connectors and replace the transmission housing cover.

4. Check and Replace Transmission Mount (if necessary)

• Sub-steps:
  1. Inspect the transmission mount for cracks or excessive wear.
  2. If damaged, remove the old mount by unbolting it from the transmission and vehicle frame.
  3. Install the new transmission mount and torque the bolts to the specified value.

5. Refill Transmission Fluid

• Sub-steps:
  1. Use a funnel to refill the transmission with the appropriate type and amount of fluid as specified in the owner’s manual.
  2. Start the engine and let it idle. Cycle through the gears to allow the fluid to circulate.
  3. Check the fluid level again and add more if necessary.