how to fix my Ford F-150 13th Generation (2015-2020) that hesitates when accelerating

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

587 words

Problem Statement

Learn how to diagnose and fix engine hesitation in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before opening the throttle body or fuel system components.

Symptoms

•Engine hesitates or stutters during acceleration
•Check engine light illuminated
•Reduced throttle response
•Poor fuel economy
•Engine may stall at low speeds

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the air filter for clogs or restrictions that may affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning properly.
4
Examine ignition components (spark plugs, ignition coils) for wear or damage.
5
Inspect the throttle body for carbon buildup or obstructions.
6
Test the mass airflow sensor (MAF) and throttle position sensor (TPS) for proper operation.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Fuel pressure gauge
•Multimeter
•Throttle body cleaner
•Spark plug socket

Parts Required

•Air filter
•Spark plugs
•Throttle body gasket (if needed)
•Fuel pump (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the air filter for clogs or restrictions that may affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning properly.
4
Examine ignition components (spark plugs, ignition coils) for wear or damage.
5
Inspect the throttle body for carbon buildup or obstructions.
6
Test the mass airflow sensor (MAF) and throttle position sensor (TPS) for proper operation.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, fuel pressure gauge, multimeter, cleaning supplies.
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Replace Air Filter

Remove the air filter housing cover using a socket set.
Take out the air filter and inspect it for dirt and debris.
If dirty, replace with a new air filter (ensure it meets OEM specifications).
Reassemble the air filter housing.

3. Check and Replace Spark Plugs

Remove the ignition coil packs using a socket set.
Take out the spark plugs using a spark plug socket.
Inspect the spark plugs for wear and carbon buildup.
Replace the spark plugs with new ones (refer to manufacturer specifications for correct type and gap).
Reinstall the ignition coil packs, ensuring they are securely fastened.

4. Clean Throttle Body

Disconnect the throttle body wiring harness and remove the throttle body using a socket set.
Clean the throttle body using throttle body cleaner and a lint-free cloth.
Reinstall the throttle body, ensuring proper torque specifications are followed.

5. Check and Test Fuel System

Connect the fuel pressure gauge to the fuel rail.
Turn the ignition to the "ON" position (do not start the engine) and check the fuel pressure reading.
If pressure is below specifications, replace the fuel pump or check for blockages in the fuel line.
Reassemble any components removed for testing.

6. Verify Sensor Functionality

Use a multimeter to check the MAF and TPS readings while the engine is running.
If readings are out of specifications, replace the faulty sensor(s).
Reconnect any disconnected wiring harnesses.