how to fix the fuel economy in my Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

medium

Severity

4 min read

630 words

Problem Statement

Learn how to diagnose and fix fuel economy issues in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Fuel System

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening any components.

Symptoms

•Check engine light illuminated
•Decreased miles per gallon (MPG)
•Engine stalling or rough idling
•Diminished acceleration or power loss
•Unusual exhaust emissions or smell
•Increased frequency of refueling

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Check tire pressure to ensure all tires are inflated to the recommended PSI.
3
Inspect the air filter for clogs or dirt that may restrict airflow.
4
Examine fuel injectors for leaks or clogs.
5
Evaluate the condition of spark plugs and ignition coils.
6
Test the fuel pressure to ensure the fuel pump is delivering the correct amount.
7
Check for vacuum leaks in intake hoses and the intake manifold.

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
•Tire pressure gauge
•Socket set
•Torque wrench
•Fuel injector cleaner or replacement injectors
•Hand tools

Parts Required

•New air filter
•New fuel injectors (if needed)
•New spark plugs

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Check tire pressure to ensure all tires are inflated to the recommended PSI.
3
Inspect the air filter for clogs or dirt that may restrict airflow.
4
Examine fuel injectors for leaks or clogs.
5
Evaluate the condition of spark plugs and ignition coils.
6
Test the fuel pressure to ensure the fuel pump is delivering the correct amount.
7
Check for vacuum leaks in intake hoses and the intake manifold.

Solution

1. Preparation

Gather tools and materials.
Ensure the vehicle is parked on a flat surface and the engine is turned off.
Disconnect the battery to prevent electrical issues.

2. Replace Air Filter

Tools Required: Socket set, screwdriver
Remove the air filter cover by loosening the clips or screws.
Take out the old air filter and clean the air filter housing with a damp cloth.
Install a new air filter, ensuring it fits snugly, and reattach the cover.

3. Clean or Replace Fuel Injectors

Tools Required: Fuel injector cleaner or replacement injectors, hand tools
If cleaning, use fuel injector cleaner according to the product instructions.
If replacing, disconnect the fuel lines and electrical connectors from the injectors.
Remove the old injectors and install the new ones, ensuring proper seating and connection.

4. Inspect and Replace Spark Plugs

Tools Required: Socket set, torque wrench, spark plug gap tool
Remove the ignition coils by unscrewing them from the engine.
Extract the old spark plugs using a socket wrench.
Check the gap on new spark plugs and adjust if necessary.
Install the new spark plugs and reattach the ignition coils, torquing to manufacturer specifications.

5. Check Tire Pressure

Tools Required: Tire pressure gauge
Use a tire pressure gauge to check each tire’s pressure.
Inflate or deflate the tires to match the specifications found in the owner's manual or on the driver's side door jamb.

6. Inspect for Vacuum Leaks

Tools Required: Smoke machine or carburetor cleaner
Use a smoke machine around intake hoses and the manifold to identify leaks.
If using carburetor cleaner, spray it around the suspected areas and listen for changes in engine RPM.
Replace or repair any damaged hoses or connections.