why does my Ford F-150 13th Generation (2015-2020) engine hesitate when accelerating

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

606 words

Problem Statement

Learn how to diagnose and fix engine hesitation during acceleration 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 the battery before working on electrical systems.
•Allow the engine to cool before opening any components.

Symptoms

•Engine stalling during acceleration
•Loss of power when pressing the accelerator
•Rough or jerky acceleration
•Poor fuel economy
•Check engine light illuminated
•Unusual engine noises (e.g., sputtering)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the air filter for clogs or restrictions that could affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
4
Examine ignition components (spark plugs, ignition coils) for wear or damage.
5
Inspect the throttle body for carbon buildup or malfunction.
6
Check for vacuum leaks in hoses connected to the intake manifold.

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
•Throttle body cleaner
•Line removal tool

Parts Required

•Air filter
•Fuel filter (if applicable)
•Spark plugs
•Throttle body gasket (if cleaning/replacing throttle body)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the air filter for clogs or restrictions that could affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
4
Examine ignition components (spark plugs, ignition coils) for wear or damage.
5
Inspect the throttle body for carbon buildup or malfunction.
6
Check for vacuum leaks in hoses connected to the intake manifold.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Air Filter

Sub-steps:
1. Open the hood and locate the air filter housing.
2. Remove the clips or screws securing the housing.
3. Take out the old air filter and inspect it for dirt and debris.
4. Install a new air filter that meets OEM specifications.
5. Reassemble the air filter housing and secure it.

3. Check and Replace Fuel Filter (if applicable)

Sub-steps:
1. Locate the fuel filter and relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
2. Disconnect the fuel lines using a line removal tool.
3. Remove the old fuel filter and install a new one, ensuring correct orientation.
4. Reconnect the fuel lines and replace the fuel pump fuse.
5. Turn the ignition to the "ON" position for a few seconds to prime the fuel system.

4. Inspect and Replace Spark Plugs

Sub-steps:
1. Remove the ignition coil cover if applicable.
2. Disconnect the ignition coils from the spark plugs.
3. Remove the spark plugs using a socket wrench.
4. Inspect each spark plug for wear and carbon deposits.
5. Install new spark plugs with the proper gap as specified by the manufacturer.
6. Reconnect the ignition coils and replace the ignition coil cover.

5. Clean or Replace Throttle Body

Sub-steps:
1. Remove the intake duct leading to the throttle body.
2. Use throttle body cleaner and a soft cloth to clean the inside of the throttle body.
3. Inspect the throttle body for signs of damage or wear.
4. If necessary, replace the throttle body with a new unit.
5. Reconnect the intake duct securely.