why is my Ford Explorer using too much fuel

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

571 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 the 2017 Ford Explorer. 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 systems.
•Relieve fuel system pressure before disconnecting fuel lines to prevent fuel spray.

Symptoms

•Check engine light illuminated
•Rough idle when the engine is running
•Decreased acceleration performance
•Unusual fuel odor from the exhaust
•Frequent refueling required
•Poor engine performance under load

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine-related issues.
2
Inspect the air filter for clogs or restrictions that could affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel system is operating correctly.
4
Examine the fuel injectors for leaks or malfunctions that may cause over-fueling.
5
Inspect the mass air flow (MAF) sensor for dirt or damage that could lead to incorrect air-fuel mixture readings.
6
Evaluate tire pressure and condition, as under-inflated tires can negatively impact fuel economy.

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
•Fuel pressure gauge
•Multimeter
•Cleaning solutions

Parts Required

•Air filter
•Fuel injectors (if necessary)
•Fuel pump or pressure regulator (if necessary)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine-related issues.
2
Inspect the air filter for clogs or restrictions that could affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel system is operating correctly.
4
Examine the fuel injectors for leaks or malfunctions that may cause over-fueling.
5
Inspect the mass air flow (MAF) sensor for dirt or damage that could lead to incorrect air-fuel mixture readings.
6
Evaluate tire pressure and condition, as under-inflated tires can negatively impact fuel economy.

Solution

1. Preparation

Gather tools and parts before starting the repair.
Tools Required: OBD-II scanner, socket set, fuel pressure gauge, multimeter, cleaning solutions.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Address Engine Codes

If error codes indicate specific issues (e.g., MAF sensor fault), replace or repair the affected component.
Clear the error codes after repairs using the OBD-II scanner.

3. Replace Air Filter

Locate the air filter housing and release the clips or screws.
Remove the old air filter and ensure the housing is clean.
Install a new air filter according to manufacturer specifications.

4. Inspect and Clean MAF Sensor

Remove the MAF sensor from the intake duct.
Use MAF cleaner to gently spray the sensor elements and allow to dry.
Reinstall the MAF sensor and ensure all connections are secure.

5. Check and Replace Fuel Injectors (if necessary)

Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
Disconnect the fuel lines and electrical connectors from the injectors.
Remove the injectors using the appropriate socket and replace them with new units.
Reconnect fuel lines and electrical connectors securely.

6. Recheck Fuel Pressure

Reinstall the fuel pump fuse and connect the fuel pressure gauge to the fuel rail.
Turn the ignition to the "ON" position (do not start the engine) and check the fuel pressure reading.
If pressure is outside the manufacturer's specifications, replace the fuel pump or pressure regulator as needed.