what should I check if my Ford F-150 13th Generation (2015-2020) has a check engine light and runs r...

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

577 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix check engine light and rough running issues 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.
•Relieve fuel system pressure before disconnecting fuel lines to avoid spills.

Symptoms

•Check engine light illuminated
•Rough idle when stationary
•Engine stalling during acceleration
•Decreased fuel efficiency
•Poor throttle response
•Increased emissions noticeable from exhaust

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the ignition system components, including spark plugs and ignition coils.
3
Check fuel pressure to ensure the fuel pump is functioning correctly.
4
Inspect air intake system for leaks or blockages, including the air filter.
5
Examine the exhaust system for any restrictions or issues, such as a clogged catalytic converter.
6
Monitor engine performance parameters using the scanner while the engine is running.

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
•Torque wrench
•Line removal tool
•Screwdriver set
•Clean rags

Parts Required

•Spark plugs
•Ignition coils (if faulty)
•Fuel filter
•Air filter

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the ignition system components, including spark plugs and ignition coils.
3
Check fuel pressure to ensure the fuel pump is functioning correctly.
4
Inspect air intake system for leaks or blockages, including the air filter.
5
Examine the exhaust system for any restrictions or issues, such as a clogged catalytic converter.
6
Monitor engine performance parameters using the scanner while the engine is running.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery for safety.
Ensure the vehicle is on a flat surface and securely parked.

2. Check and Replace Spark Plugs

Sub-steps:
1. Remove the engine cover if applicable (using a socket set).
2. Disconnect the ignition coil connectors by pressing the release tab.
3. Remove the ignition coils using a socket.
4. Remove the old spark plugs using a spark plug socket.
5. Inspect the spark plugs for wear; replace with OEM specifications if necessary (use torque wrench to tighten to 13 lb-ft).
6. Reassemble by reversing the removal steps.

3. Inspect and Replace Fuel Filter

Sub-steps:
1. Locate the fuel filter (typically along the fuel line).
2. Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
3. Disconnect the fuel lines using a line removal tool, ensuring to collect any spilled fuel.
4. Remove and replace the fuel filter with a new one.
5. Reconnect the fuel lines and reinsert the fuel pump fuse.

4. Clean or Replace Air Filter

Sub-steps:
1. Open the air intake housing using a screwdriver or socket.
2. Remove the old air filter and inspect for dirt or blockages.
3. Clean the air intake housing with a clean rag.
4. Install a new air filter, ensuring it fits snugly into the housing.

5. Inspect Exhaust System

Sub-steps:
1. Visually inspect the exhaust system for visible damages or rust.
2. Check for any unusual noises that indicate a leak or blockage.
3. If a clogged catalytic converter is suspected, perform a backpressure test.
4. Replace any damaged components as necessary.