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

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

Symptoms

•Poor fuel economy (significantly reduced miles per gallon)
•Check engine light illuminated
•Rough idling or engine stalling
•Unusual engine noises (knocking or pinging)
•Strong fuel odor around the vehicle
•Increased emissions or black smoke from the exhaust

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine faults.
2
Inspect the air filter for clogs or excessive dirt, which can affect air intake.
3
Check the fuel pressure to ensure the fuel pump is operating correctly.
4
Examine the fuel injectors for clogs or leaks.
5
Inspect the engine's spark plugs for wear or fouling.
6
Verify tire pressure and condition, as under-inflated tires can affect fuel efficiency.

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
•Torque wrench
•Tire pressure gauge

Parts Required

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

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine faults.
2
Inspect the air filter for clogs or excessive dirt, which can affect air intake.
3
Check the fuel pressure to ensure the fuel pump is operating correctly.
4
Examine the fuel injectors for clogs or leaks.
5
Inspect the engine's spark plugs for wear or fouling.
6
Verify tire pressure and condition, as under-inflated tires can affect fuel efficiency.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface.
Disconnect the battery to prevent electrical shorts.

2. Replace Air Filter

Locate the air filter housing.
Remove the screws or clips securing the housing.
Take out the old air filter and inspect for debris.
Install a new, clean air filter (ensure it matches the manufacturer's specifications).
Reassemble the housing securely.

3. Test Fuel Pressure

Attach a fuel pressure gauge to the fuel rail's test port.
Turn the ignition key to the "ON" position (do not start) to check the pressure reading.
Compare the reading to the manufacturer’s specifications.
If pressure is low, consider replacing the fuel pump.

4. Clean or Replace Fuel Injectors

Access the fuel injectors by removing the intake manifold if needed.
Use a fuel injector cleaning kit to clean injectors or replace them if they are faulty.
Reinstall the intake manifold securely.

5. Inspect and Replace Spark Plugs

Remove the spark plug wires or ignition coils.
Use a spark plug socket to remove each spark plug.
Inspect for carbon buildup or wear; replace with new plugs if necessary.
Reinstall the spark plugs and reconnect wires or coils.

6. Check Tire Pressure

Use a tire pressure gauge to check each tire's pressure.
Inflate tires to the recommended PSI specified on the vehicle door jamb.
Inspect for uneven wear and replace tires if necessary.