why does my Ford Explorer Fifth Generation (2011-2019) have a check engine light and runs rough

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

546 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

Diagnose and fix check engine light and rough running issues in Ford Explorer (2011-2019). Step-by-step guide with 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 systems.
•Allow the engine to cool before working on any components.

Symptoms

•Check engine light illuminated
•Rough idle
•Engine stalling intermittently
•Loss of power during acceleration
•Poor fuel economy
•Increased engine vibrations

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the vehicle's air intake system for leaks or blockages.
3
Check the condition of spark plugs and ignition coils for wear or failure.
4
Examine fuel injectors for clogs or malfunctions.
5
Test the fuel pressure to ensure the fuel pump is operating correctly.
6
Inspect the exhaust system for any restrictions 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
•Socket set
•Torque wrench
•Fuel injector cleaning kit
•Multimeter

Parts Required

•Spark plugs (OEM recommended)
•Ignition coils (if needed)
•Fuel injectors (if cleaning does not resolve issues)
•Air filter (if dirty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the vehicle's air intake system for leaks or blockages.
3
Check the condition of spark plugs and ignition coils for wear or failure.
4
Examine fuel injectors for clogs or malfunctions.
5
Test the fuel pressure to ensure the fuel pump is operating correctly.
6
Inspect the exhaust system for any restrictions or leaks.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle's battery to ensure safety.
Allow the engine to cool if it has been running.

2. Address Ignition System

Remove Engine Cover (if applicable)
- Use a socket set to remove bolts securing the cover.
Inspect Spark Plugs
- Remove spark plug wires using a spark plug socket.
- Check for signs of wear, such as fouling or excessive gap.
- Replace any faulty spark plugs with OEM replacements.
Check Ignition Coils
- Disconnect the electrical connectors from the ignition coils.
- Remove coils and inspect for cracks or corrosion.
- Replace any defective ignition coils.

3. Clean or Replace Fuel Injectors

Access Fuel Rail
- Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
- Disconnect fuel lines and remove the fuel rail.
Clean Injectors
- Use a fuel injector cleaning kit or replace injectors if severely clogged.
- Reinstall fuel rail and ensure connections are secure.

4. Inspect Air Intake and Exhaust

Check Air Filter
- Remove the air filter and inspect for dirt and debris.
- Replace if necessary.
Inspect MAF Sensor
- Disconnect and clean the Mass Air Flow (MAF) sensor with MAF cleaner.
Examine Exhaust System
- Inspect for any leaks or obstructions in the exhaust pipes and catalytic converter.