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

453 words

Problem Statement

Learn how to diagnose and fix poor fuel economy issues in 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 replacing the fuel filter to prevent fuel spray.

Symptoms

•Check engine light illuminated
•Decreased miles per gallon (MPG)
•Rough engine idle
•Unusual exhaust emissions (black smoke)
•Increased engine noise
•Fuel odor inside or around the vehicle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any potential engine issues.
2
Check tire pressure to ensure they are inflated to manufacturer specifications.
3
Inspect the air filter for cleanliness and proper airflow.
4
Analyze fuel trim readings to assess fuel mixture accuracy.
5
Examine the fuel system for leaks or signs of malfunction.
6
Test the mass airflow sensor (MAF) for proper operation.

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
•Tire pressure gauge
•Screwdriver set
•MAF cleaner
•Fuel line wrench

Parts Required

•Air filter
•Mass airflow sensor (if needed)
•Fuel filter (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any potential engine issues.
2
Check tire pressure to ensure they are inflated to manufacturer specifications.
3
Inspect the air filter for cleanliness and proper airflow.
4
Analyze fuel trim readings to assess fuel mixture accuracy.
5
Examine the fuel system for leaks or signs of malfunction.
6
Test the mass airflow sensor (MAF) for proper operation.

Solution

1. Preparation

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

2. Inspect and Replace the Air Filter

Open the hood and locate the air filter housing.
Remove the screws or clips securing the housing.
Take out the old air filter and inspect it for dirt and debris.
Install a new air filter, ensuring it fits snugly in the housing.
Re-secure the housing with screws or clips.

3. Clean or Replace the Mass Airflow Sensor (MAF)

Locate the MAF sensor in the air intake duct.
Disconnect the electrical connector and remove the sensor.
Clean the MAF sensor with MAF cleaner or replace it if damaged.
Reinstall the sensor and reconnect the electrical connector.

4. Check and Replace Fuel Filter (if necessary)

Locate the fuel filter, typically found along the fuel line.
Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
Disconnect the fuel lines from both sides of the filter.
Install the new fuel filter, ensuring proper orientation and connections.
Reinstall the fuel pump fuse and start the engine to check for leaks.

5. Inspect Tire Pressure and Alignment

Use a tire pressure gauge to check each tire and inflate to recommended levels.
Inspect the alignment visually or use a wheel alignment tool.
Adjust alignment if necessary to prevent uneven tire wear.

Tools Required:

OBD-II scanner
Tire pressure gauge
Screwdriver set
MAF cleaner
Fuel line wrench

Parts Required:

Air filter
Mass airflow sensor (if needed)
Fuel filter (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Relieve fuel system pressure before replacing the fuel filter to prevent fuel spray.