what causes the check engine light to flash in Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

635 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

Discover the causes of a flashing check engine light in Ford Explorer (2011-2019) and learn how to diagnose and fix engine misfires effectively.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems

Symptoms

•Flashing check engine light
•Engine running rough or shaking
•Decreased engine power and acceleration
•Increased fuel consumption
•Engine stalling or hesitation during acceleration

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to retrieve trouble codes.
2
Inspect the ignition system, including spark plugs, ignition coils, and wiring for damage or wear.
3
Check fuel system components such as fuel injectors, fuel pump, and fuel filter for proper operation.
4
Examine the air intake system for leaks or blockages that could affect the air-fuel mixture.
5
Evaluate the exhaust system for clogged catalytic converters or exhaust leaks.
6
Assess engine compression to rule out internal mechanical issues.

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 pressure gauge
•Compression tester

Parts Required

•Spark plugs
•Ignition coils
•Fuel filter (if applicable)
•Catalytic converter (if needed)

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to retrieve trouble codes.
2
Inspect the ignition system, including spark plugs, ignition coils, and wiring for damage or wear.
3
Check fuel system components such as fuel injectors, fuel pump, and fuel filter for proper operation.
4
Examine the air intake system for leaks or blockages that could affect the air-fuel mixture.
5
Evaluate the exhaust system for clogged catalytic converters or exhaust leaks.
6
Assess engine compression to rule out internal mechanical issues.

Solution

1. Preparation

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

2. Inspect and Replace Ignition Components

Tools Required: Socket set, torque wrench
Remove the engine cover (if applicable) by unscrewing fasteners.
Disconnect the ignition coil connectors and remove the ignition coils.
Inspect spark plugs for wear or damage; replace if necessary.
Reinstall new spark plugs, torquing them to the manufacturer’s specifications (typically around 13-16 lb-ft).
Install new ignition coils, ensuring they click into place, and reconnect the electrical connectors.

3. Check and Repair Fuel System

Tools Required: Fuel pressure gauge
Locate the fuel pressure test port on the fuel rail and connect the fuel pressure gauge.
Turn the ignition to the "On" position (without starting the engine) to check fuel pressure.
If pressure is low, inspect the fuel pump for functionality and replace if needed.
Check fuel injectors for clogs; clean or replace as necessary.

4. Inspect Air Intake System

Remove the air intake duct and visually inspect for any obstructions or leaks.
Clean the throttle body using throttle body cleaner and a soft cloth.
Reinstall any components and ensure all clamps and hoses are secure.

5. Check Exhaust System

Inspect the exhaust system for any visible leaks or damage.
If a clogged catalytic converter is suspected, use an exhaust backpressure gauge to test.
Replace the catalytic converter if backpressure readings are above acceptable limits.

6. Engine Compression Test

Tools Required: Compression tester
Remove spark plugs and insert the compression tester into each cylinder.
Crank the engine and record the readings from each cylinder.
Compare readings to specifications; if any cylinder is low, further investigation into internal engine components may be necessary.