2018 F150 Throttle Body Relearn Procedure

Learn how to perform a 2018 F150 throttle body relearn procedure

Any time you disconnect battery power to the vehicle or the

powertrain control module (PCM) you lose the baseline throttle body position. That can cause a no-start or rough idle condition. This post shows the procedure to perform a 2018 F150 throttle body relearn. to re-establish the throttle body baseline. and fuel trims and give you a smooth idle.

Follow this 7-step 2018 F150  procedure

Perform this procedure any time you disconnect the battery cables or remove any of the fuses that power the PCM.

NOTE: Ford states that if you do not allow the engine to relearn its idle trim, the idle quality of your vehicle may be adversely affected until the idle trim is eventually relearned.

Your vehicle must be stopped (engine off) before starting the procedure

1. Set the parking brake.
2. Move the gearshift to the P(Park) or neutral (N) position and turn off all electrical accessories.
3. Press the Brake Pedal and Start the engine.
4. Let the engine idle until the temperature gauge shows normal operating temperature (middle of the gauge). While the engine is warming up, complete the following: Reset the clock (see owner’s manual). Reset the power windows bounce-back feature (see owner’s manual). Reset the radio stations (see owner’s manual).
5. Allow the engine to idle for at least one minute after reaching operating temperature.
6. Drive your vehicle at least 10 miles to complete the relearning process.

Your idle should return to a normal RPM after performing this procedure. If it doesn’t, perform the entire procedure again.

NOTE: Ford also states: “If you were running E85 fuel in your 2018 F150, you may experience poor starts or an inability to start the engine and driveability problems until the fuel trim and ethanol content have been relearned.”

©, 2024 Rick Muscoplat