why is my Ford F-150 13th Generation (2015-2020) not shifting smoothly

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, screwdriver set, transmission fluid pump, transmission fluid.
• Ensure the vehicle is on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical issues during repairs.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick and remove it to check fluid level.
  2. If fluid is low, add the manufacturer-recommended transmission fluid.
  3. If fluid is burnt or contaminated, proceed to drain and replace the fluid.
     • Drain: Remove the transmission pan bolts and carefully remove the pan.
     • Replace: Install a new transmission filter and gasket, then reassemble the pan.
     • Refill: Use a transmission fluid pump to refill the system with new fluid.

3. Inspect and Replace the Throttle Position Sensor (If Needed)

• Sub-steps:
  1. Locate the TPS on the throttle body.
  2. Disconnect the electrical connector and remove the mounting screws.
  3. Install the new TPS and reconnect the electrical connector.
  4. Adjust the TPS if required according to the manufacturer’s specifications.

4. Check Transmission Control Module (TCM)

• Sub-steps:
  1. Inspect wiring and connectors for signs of damage or corrosion.
  2. Clean any corrosion with electrical contact cleaner.
  3. Reconnect and secure all connections.
  4. If necessary, replace the TCM based on diagnostic results.