why does my Ford F-150 12th Generation (2009-2014) jerk when shifting

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the vehicle to cool down if it has been running.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Raise the vehicle using jack stands for safe access.
  2. Remove the transmission pan using a socket set.
  3. Drain the old transmission fluid into a suitable container.
  4. Replace the transmission filter if clogged or damaged.
  5. Clean the transmission pan and replace the gasket.
  6. Reinstall the pan and torque bolts to manufacturer's specifications (typically around 12-15 ft-lbs).
  7. Refill the transmission with new fluid (use Mercon LV ATF) through the dipstick tube.

3. Replace Throttle Position Sensor

• Sub-steps:
  1. Locate the TPS on the throttle body.
  2. Disconnect the electrical connector from the TPS.
  3. Remove the mounting screws securing the TPS.
  4. Install the new TPS and secure it with screws.
  5. Reconnect the electrical connector.

4. Inspect Engine and Transmission Mounts

• Sub-steps:
  1. Visually inspect engine mounts for cracks or separation.
  2. Use a pry bar to check for excessive movement in the mounts.
  3. Replace any damaged mounts with new ones, following the manufacturer's torque specifications.