my Ford F-150 13th Generation (2015-2020) has a hard time starting in cold weather

Solution

1. Preparation

• Tools Required: Multimeter, OBD-II scanner, fuel pressure gauge, socket set, torque wrench.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Battery Replacement (if necessary)

1. Remove Old Battery:
   • Use a socket set to loosen and remove the battery terminals, starting with the negative terminal.
   • Remove any battery hold-down brackets.
   • Carefully lift the battery out of the tray.
2. Install New Battery:
   • Place the new battery into the tray.
   • Reinstall any hold-down brackets and secure them.
   • Connect the positive terminal first, followed by the negative terminal. Ensure connections are tight and clean.

3. Fuel System Inspection

1. Test Fuel Pressure:
   • Connect the fuel pressure gauge to the fuel rail Schrader valve.
   • Turn the ignition to the "ON" position (do not start the engine) and check the fuel pressure reading; it should meet manufacturer specifications (usually around 30-60 psi).
2. Replace Fuel Filter (if clogged):
   • Locate the fuel filter and relieve fuel pressure by removing the fuel pump fuse and starting the engine until it stalls.
   • Disconnect fuel lines and remove the old filter. Install the new filter, ensuring proper orientation.

4. Starter Motor Test/Replacement

1. Inspect Starter Motor:
   • Locate the starter motor and check connections for any corrosion or looseness.
   • If the starter is faulty, remove it by disconnecting electrical connections and unbolting it from the engine.
2. Install New Starter:
   • Position the new starter and secure it with bolts to the engine.
   • Reconnect the electrical connections.