how to troubleshoot Ford Explorer Fifth Generation (2011-2019) fuel economy problems

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

637 words

Problem Statement

Learn how to troubleshoot fuel economy problems in Ford Explorer (2011-2019). Step-by-step guide with diagnostic steps and repair solutions.

Affected Component

Fuel System

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 opening the hood or working on components.

Symptoms

•Check engine light illuminated
•Rough idle or engine misfires
•Loss of power during acceleration
•Decreased miles per gallon (MPG)
•Unusual exhaust smoke or odors
•Increased emissions

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner for any error codes.
2
Inspect fuel levels and check for any fuel leaks around the fuel lines and injectors.
3
Check the air filter for blockages and replace if dirty.
4
Verify tire pressure and condition; ensure tires are properly inflated and aligned.
5
Test the fuel pressure using a fuel pressure gauge to confirm it meets manufacturer specifications.
6
Examine the exhaust system for leaks or blockages that may affect engine performance.
7
Inspect the spark plugs and ignition system for wear or malfunction.

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
•Tire pressure gauge
•Fuel pressure gauge

Parts Required

•Air filter
•Spark plugs
•Fuel filter (if necessary)

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner for any error codes.
2
Inspect fuel levels and check for any fuel leaks around the fuel lines and injectors.
3
Check the air filter for blockages and replace if dirty.
4
Verify tire pressure and condition; ensure tires are properly inflated and aligned.
5
Test the fuel pressure using a fuel pressure gauge to confirm it meets manufacturer specifications.
6
Examine the exhaust system for leaks or blockages that may affect engine performance.
7
Inspect the spark plugs and ignition system for wear or malfunction.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the negative battery terminal to ensure safety.
Allow the engine to cool before beginning work.

2. Replace Air Filter

Locate the air filter housing.
Remove the clips or screws securing the housing and open it.
Take out the old air filter and clean the housing.
Insert the new air filter, ensuring it is seated properly.
Reattach the housing and secure it with clips or screws.

3. Inspect and Replace Spark Plugs

Remove the ignition coil cover (if applicable) using a socket set.
Disconnect the ignition coils and remove them from the spark plugs.
Use a spark plug socket to extract the old spark plugs.
Inspect the spark plugs for wear; replace if necessary with OEM or equivalent parts.
Torque the new spark plugs to the manufacturer's specifications (typically around 13-15 lb-ft).
Reinstall the ignition coils and cover.

4. Check Tire Pressure and Condition

Use a tire pressure gauge to check the pressure of each tire.
Inflate tires to the recommended PSI found on the driver's door jamb.
Inspect the tread for wear; replace tires if they are worn beyond safe limits.

5. Test and Adjust Fuel Pressure

Connect a fuel pressure gauge to the fuel rail test port.
Start the engine and observe the fuel pressure reading; it should match manufacturer specifications (typically around 50-60 PSI).
If the pressure is low, check the fuel pump and fuel filter for issues; replace if necessary.

6. Inspect Exhaust System

Visually inspect the exhaust system for any holes or damage.
Use a smoke test or listen for hissing sounds that indicate leaks.
Replace any damaged components, such as gaskets or pipes.