how to troubleshoot a rough running Ford F-150 13th Generation (2015-2020)

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

648 words

Problem Statement

Learn how to troubleshoot rough running conditions in Ford F-150 (2015-2020). Step-by-step guide with diagnostic steps, tools, and solutions.

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 engine to cool before opening any components.

Symptoms

•Engine misfires or hesitations during acceleration
•Rough idle at stoplights or in park
•Decreased fuel economy
•Check engine light illuminated
•Unusual engine noises (e.g., knocking or pinging)
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect spark plugs and ignition coils for wear or damage.
3
Check fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
4
Examine air intake system for leaks or obstructions.
5
Test the mass air flow (MAF) sensor for proper function using a multimeter.
6
Inspect the exhaust system for signs of blockage or leaks.

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
•Torque wrench
•Multimeter
•MAF cleaner
•Hose clamp pliers

Parts Required

•Spark plugs
•Ignition coils (if needed)
•MAF sensor (if needed)
•Fuel filter (if needed)
•Air filter

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect spark plugs and ignition coils for wear or damage.
3
Check fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
4
Examine air intake system for leaks or obstructions.
5
Test the mass air flow (MAF) sensor for proper function using a multimeter.
6
Inspect the exhaust system for signs of blockage or leaks.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety while working on electrical components.
Allow the engine to cool before starting the procedure.

2. Inspect and Replace Spark Plugs and Ignition Coils

Tools Required: Socket set, torque wrench, dielectric grease
Remove the ignition coil covers (if applicable) and disconnect the electrical connectors.
Unbolt the ignition coils and pull them out gently.
Remove the spark plugs using a spark plug socket and inspect them for wear (look for carbon buildup, wear on electrodes).
Replace with new spark plugs, ensuring to use the manufacturer-recommended type and torque them to specifications (typically around 13 lb-ft).
Apply dielectric grease to the inside of the ignition coil boot and reinstall the ignition coils.

3. Fuel System Inspection

Tools Required: Fuel pressure gauge
Locate the fuel pressure test port on the fuel rail and connect the fuel pressure gauge.
Turn the ignition key to the "On" position (do not start the engine) to prime the fuel system and check the reading.
If pressure is below specifications, inspect the fuel filter and pump for blockages or failure. Replace components as necessary.

4. Clean or Replace MAF Sensor

Tools Required: MAF cleaner or electrical cleaner, screwdriver
Disconnect the electrical connector from the MAF sensor and remove it from the air intake duct.
Clean the sensor wire with MAF cleaner according to the product instructions or replace the sensor if it is faulty.
Reinstall the MAF sensor and reconnect the electrical connector.

5. Air Intake System Repair

Tools Required: Hose clamp pliers, screwdriver
Inspect the air intake hoses for cracks or loose fittings. Replace any damaged hoses.
Check the air filter; if it is dirty, replace it with a new one.

6. Exhaust System Inspection

Tools Required: Jack and jack stands, flashlight
Raise the vehicle and inspect the exhaust system for leaks or blockages.
Repair or replace any damaged components found during inspection.