why is my Ford Explorer using more gas than usual?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

595 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 components.
•Allow the engine to cool before inspecting the air filter or ignition system.

Symptoms

•Decreased fuel economy compared to previous performance
•Check engine light illuminated
•Rough idle or engine misfires
•Unusual exhaust odors (e.g., rich fuel smell)
•Increased engine noise or performance lag
•Fuel gauge drops more rapidly than normal

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any trouble codes.
2
Check and record fuel trims using the scanner to assess air-fuel mixture.
3
Inspect the air filter for clogs or restrictions that could affect airflow.
4
Examine the fuel system for leaks, including fuel lines and injector seals.
5
Test the fuel pressure using a fuel pressure gauge to ensure proper delivery.
6
Inspect the spark plugs for wear or carbon buildup, which can affect combustion.
7
Check the tire pressure and condition, as under-inflated or worn tires can impact 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
•Screwdrivers
•Wrenches

Parts Required

•Air filter
•Spark plugs
•Fuel filter (if clogged)
•Fuel line (if damaged)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any trouble codes.
2
Check and record fuel trims using the scanner to assess air-fuel mixture.
3
Inspect the air filter for clogs or restrictions that could affect airflow.
4
Examine the fuel system for leaks, including fuel lines and injector seals.
5
Test the fuel pressure using a fuel pressure gauge to ensure proper delivery.
6
Inspect the spark plugs for wear or carbon buildup, which can affect combustion.
7
Check the tire pressure and condition, as under-inflated or worn tires can impact fuel efficiency.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent any electrical shorts during inspection.

2. Replace the Air Filter

Locate the air filter housing.
Open the housing and remove the old air filter.
Insert the new air filter, ensuring it fits snugly.
Reassemble the housing and reconnect any clips or screws.

3. Inspect and Replace Spark Plugs

Remove the ignition coil or plug wires to access the spark plugs.
Use a socket to remove the old spark plugs.
Inspect the gaps and condition of the plugs; replace if worn or fouled.
Install new spark plugs, torquing to manufacturer specifications (typically 12-15 ft-lbs).
Reconnect ignition coils or plug wires.

4. Check Fuel System for Leaks

Inspect fuel lines visually for any signs of leakage or damage.
If leaks are found, replace the damaged sections of fuel line.
Ensure all connections are tight and secure.

5. Test and Adjust Fuel Pressure

Attach the fuel pressure gauge to the fuel rail.
Turn the ignition key to the "On" position to prime the fuel system.
Check the pressure reading against manufacturer specifications (usually around 30-50 psi).
If pressure is low, inspect the fuel pump and filter for clogs or failures.

6. Tire Inspection and Maintenance

Check tire pressure and inflate to the recommended PSI.
Inspect tires for uneven wear; rotate or replace if necessary.