why is my Ford Explorer using so much gas lately?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

517 words

Problem Statement

Learn how to diagnose and fix increased fuel consumption in Ford Explorer. Step-by-step guide with diagnostic procedures 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.
•Allow the engine to cool before inspecting or servicing components.

Symptoms

•Poor fuel economy (lower miles per gallon)
•Check engine light illuminated
•Rough engine idle
•Loss of power during acceleration
•Unusual exhaust smoke (black or excessive)

Diagnostic Steps

1
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
2
Inspect the air filter for blockages or dirt, and replace if necessary.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
4
Inspect the fuel injectors for clogs or leaks.
5
Examine the tires for proper inflation and alignment.
6
Review engine oil condition and level; change if dirty or low.

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
•Tire pressure gauge
•Fuel injector cleaning kit

Parts Required

•Air filter
•Fuel injectors (if replacement is needed)
•Fuel pressure regulator (if replacement is needed)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
2
Inspect the air filter for blockages or dirt, and replace if necessary.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
4
Inspect the fuel injectors for clogs or leaks.
5
Examine the tires for proper inflation and alignment.
6
Review engine oil condition and level; change if dirty or low.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent electrical issues.

2. Replace Air Filter

Remove the air filter housing cover using a socket set.
Take out the old air filter and inspect the housing for debris.
Install a new air filter, ensuring it fits snugly in place.
Reattach the housing cover and secure it.

3. Clean or Replace Fuel Injectors

Remove the fuel injectors from the fuel rail using a socket set.
Use a fuel injector cleaning kit or solvent to clean each injector.
If injectors are damaged or clogged beyond cleaning, replace with new injectors.
Reinstall cleaned or new injectors, ensuring O-rings are lubricated and secure.

4. Check and Replace Fuel Pressure Regulator (if necessary)

Disconnect the fuel lines from the regulator using a wrench.
Remove the regulator from the fuel rail.
Install a new fuel pressure regulator and reconnect the fuel lines.
Ensure there are no leaks after reinstallation.

5. Tire Inspection and Maintenance

Check each tire for proper inflation using a tire pressure gauge.
Inflate tires to the recommended pressure as specified on the door jamb sticker.
Inspect for uneven wear; if found, consider a wheel alignment.