why is my Ford Explorer Fifth Generation (2011-2019) using too much fuel?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

600 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

Learn how to diagnose and fix excessive fuel consumption in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Fuel System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool down before performing maintenance to prevent burns.

Symptoms

•Check engine light illuminated
•Rough idle or engine stalling
•Decreased acceleration or power
•Poor fuel economy compared to manufacturer specifications
•Unusual exhaust smoke (black or rich fuel smell)
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored fault codes.
2
Check the fuel pressure with a fuel pressure gauge to ensure it is within manufacturer specifications.
3
Inspect the air filter for dirt or blockages that could restrict airflow.
4
Examine the fuel injectors for leaks or clogs by performing a visual inspection and using a multimeter for resistance checks.
5
Inspect the mass airflow sensor (MAF) for cleanliness and proper function.
6
Review tire pressure and condition to rule out rolling resistance 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
•Fuel pressure gauge
•Socket set
•Multimeter
•Compressed air
•MAF cleaner spray
•Torque wrench

Parts Required

•Air filter
•Fuel injectors (if cleaning is ineffective)
•Spark plugs

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored fault codes.
2
Check the fuel pressure with a fuel pressure gauge to ensure it is within manufacturer specifications.
3
Inspect the air filter for dirt or blockages that could restrict airflow.
4
Examine the fuel injectors for leaks or clogs by performing a visual inspection and using a multimeter for resistance checks.
5
Inspect the mass airflow sensor (MAF) for cleanliness and proper function.
6
Review tire pressure and condition to rule out rolling resistance issues.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the negative terminal of the battery to ensure safety.
Allow the vehicle to cool down before starting work on the engine.

2. Clean or Replace the Air Filter

Locate the air filter housing and release the clips or screws.
Remove the air filter and inspect it for dirt and damage.
If the filter is dirty, clean it with compressed air or replace it with a new one.
Reinstall the air filter housing securely.

3. Inspect and Clean the Mass Airflow Sensor (MAF)

Locate the MAF sensor, usually found in the intake air duct.
Disconnect the electrical connector from the MAF sensor.
Use MAF cleaner spray to clean the sensor element carefully. Do not touch the sensor with your fingers.
Reconnect the electrical connector and ensure it is secure.

4. Test and Clean the Fuel Injectors

Remove the fuel injectors from the engine rail by detaching the fuel rail (if applicable).
Use a fuel injector cleaning kit or a professional cleaning service to flush out clogs.
Reinstall the cleaned or replaced fuel injectors ensuring proper sealing.

5. Check and Replace Spark Plugs

Remove the engine cover if necessary to access the spark plugs.
Use a spark plug socket to remove each spark plug and inspect for wear.
Replace any worn or fouled spark plugs with new ones, ensuring proper gap settings according to manufacturer specifications.
Reinstall the spark plugs and engine cover.