how to fix my Toyota RAV4 transmission slipping at higher speeds

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface, and engage the parking brake.
• Disconnect the battery negative terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission dipstick and check the fluid level; add fluid if necessary.
  2. If fluid is low or burnt, drain the old fluid using a fluid pump.
  3. Replace the transmission pan gasket if it shows signs of wear.
  4. Refill the transmission with the manufacturer-recommended fluid type (e.g., Toyota ATF WS).
  5. Start the engine and cycle through all gears, then check the fluid level again and adjust if necessary.

3. Inspect and Replace Transmission Filter

• Sub-steps:
  1. Remove the transmission pan using a socket set and drain any remaining fluid.
  2. Remove the old transmission filter and clean any debris from the mounting surface.
  3. Install a new transmission filter and ensure it is seated correctly.
  4. Reinstall the transmission pan and torque the bolts to the manufacturer specifications (typically around 8-10 ft-lbs).

4. Adjust Transmission Linkage and Cables

• Sub-steps:
  1. Visually inspect the transmission linkage for any misalignment or damage.
  2. Adjust the transmission cable according to the service manual specifications.
  3. Test the linkage by shifting through all gears to ensure smooth operation.

5. Electrical Checks

• Sub-steps:
  1. Use a multimeter to check the throttle position sensor (TPS) output; replace if outside specifications.
  2. Inspect electrical connectors and wiring for signs of wear or corrosion.