why does my Ford F-150 13th Generation (2015-2020) hesitate when I press the gas

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

546 words

Problem Statement

Learn how to diagnose and fix engine hesitation in Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, 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 components.
•Allow the engine to cool before performing any inspections or repairs.

Symptoms

•Engine hesitates or stutters when accelerating
•Loss of power during acceleration
•Check engine light illuminated
•Rough idle when stationary
•Increased fuel consumption
•Engine misfiring or backfiring

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect air intake system for leaks or obstructions.
3
Check fuel pressure using a fuel pressure gauge to ensure adequate supply.
4
Examine the throttle body for carbon buildup and proper operation.
5
Inspect ignition system components, including spark plugs and ignition coils.
6
Review the status of the Mass Air Flow (MAF) sensor for proper function.

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
•Fuel pressure gauge
•Socket set
•Throttle body cleaner

Parts Required

•Air filter
•Spark plugs
•Ignition coils (if necessary)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect air intake system for leaks or obstructions.
3
Check fuel pressure using a fuel pressure gauge to ensure adequate supply.
4
Examine the throttle body for carbon buildup and proper operation.
5
Inspect ignition system components, including spark plugs and ignition coils.
6
Review the status of the Mass Air Flow (MAF) sensor for proper function.

Solution

1. Preparation

Gather tools and parts: OBD-II scanner, fuel pressure gauge, socket set, throttle body cleaner, replacement air filter, and ignition components if necessary.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Addressing Error Codes

Use the OBD-II scanner to retrieve and document any error codes.
Clear codes and take the vehicle for a test drive to see if any codes reappear.

3. Inspect and Clean Components

Throttle Body Cleaning
- Disconnect the negative battery terminal.
- Remove the air intake duct to access the throttle body.
- Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
- Reassemble the intake duct and reconnect the battery.
Fuel System Inspection
- Connect the fuel pressure gauge to the fuel rail.
- Turn the ignition to the "ON" position without starting the engine and check the fuel pressure reading. Compare it to the manufacturer’s specifications.
- If pressure is low, inspect the fuel filter and fuel pump for issues.

4. Replace Ignition Components (if necessary)

If ignition components are faulty:
- Remove the engine cover (if applicable).
- Unplug the ignition coils and remove them using the appropriate socket.
- Replace spark plugs with the correct type and gap.
- Reinstall ignition coils and engine cover.

5. Replace Air Filter

Locate the air filter housing.
Open the housing and remove the old air filter.
Install a new air filter that matches the specifications for the F-150.
Secure the housing.