why does my Ford Explorer Fifth Generation (2011-2019) engine light turn on and off

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

492 words

Problem Statement

Learn how to diagnose and fix intermittent engine light issues in Ford Explorer (2011-2019). 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 battery before working on electrical systems.
•Allow engine to cool before inspecting engine components.

Symptoms

•Check engine light illuminated intermittently
•Possible rough engine idle
•Decreased fuel efficiency
•Engine stalling at idle or low speeds
•Increased emissions or odor of fuel
•Unusual noises from the engine compartment

Diagnostic Steps

1
Scan the vehicle's onboard diagnostics (OBD-II) for error codes.
2
Inspect the gas cap to ensure it is tightly sealed and not damaged.
3
Check for any visible leaks in the vacuum hoses or intake system.
4
Test the battery voltage and connections for any electrical issues.
5
Inspect the spark plugs and ignition coils for wear or damage.
6
Examine the fuel system for proper pressure and operation.

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
•Multimeter
•Socket set
•Fuel pressure gauge

Parts Required

•Gas cap (if damaged)
•Spark plugs (if worn)
•Ignition coils (if faulty)
•Vacuum hoses (if damaged)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostics (OBD-II) for error codes.
2
Inspect the gas cap to ensure it is tightly sealed and not damaged.
3
Check for any visible leaks in the vacuum hoses or intake system.
4
Test the battery voltage and connections for any electrical issues.
5
Inspect the spark plugs and ignition coils for wear or damage.
6
Examine the fuel system for proper pressure and operation.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Perform a Diagnostic Scan

Use an OBD-II scanner to retrieve any fault codes.
Record the codes for further investigation.

3. Inspect and Replace the Gas Cap

Check the gas cap for cracks or damage.
If necessary, replace it with a new one to ensure a proper seal.

4. Examine and Repair Vacuum Leaks

Inspect all vacuum hoses for cracks or disconnects.
Replace any damaged hoses or reconnect loose fittings to ensure proper air intake.

5. Check Electrical Components

Test battery voltage using a multimeter (should read between 12.4V and 12.7V).
Clean battery terminals and tighten connections if they are loose.

6. Inspect Spark Plugs and Ignition Coils

Remove spark plugs and check for wear, deposits, or damage.
Replace any worn spark plugs and faulty ignition coils as needed.

7. Inspect Fuel System

Connect a fuel pressure gauge to the fuel rail.
Ensure the fuel pressure is within the manufacturer's specifications (usually between 30-50 psi).
If pressure is low, inspect and replace the fuel pump or filter if necessary.