how to fix Ford F-150 13th Generation (2015-2020) hard shifting issues

Solution

1. Preparation

• Gather tools and parts: OBD-II scanner, socket set, fluid pump, transmission fluid, multimeter, wrenches, and a torque wrench.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to ensure safety.

2. Transmission Fluid Change

1. Drain Fluid:
   • Use a socket set to remove the transmission pan bolts.
   • Carefully lower the pan to allow fluid to drain into a suitable container.
2. Replace Filter:
   • Remove the old transmission filter and discard it.
   • Install the new filter, ensuring it is seated properly.
3. Clean Pan:
   • Clean the transmission pan and magnet to remove any debris.
   • Inspect the pan for damage and replace if necessary.
4. Reinstall Pan:
   • Apply a new gasket or sealant as recommended.
   • Reattach the transmission pan and torque the bolts to the manufacturer’s specifications.

3. Inspect and Repair Components

1. Check TCM and Wiring:
   • Visually inspect the TCM connections. If damaged, repair or replace the wiring harness.
2. Test TPS:
   • Use a multimeter to check the TPS voltage. Replace the sensor if readings are out of specification.
3. Evaluate Transmission Mounts:
   • Inspect mounts for wear or cracks; replace if necessary.

4. Refill Transmission Fluid

• Use a fluid pump to fill the transmission with the appropriate type and amount of fluid as specified in the owner’s manual.
• Start the engine and cycle through the gears to distribute the fluid.