why does my Ford Explorer Fifth Generation (2011-2019) get poor fuel economy

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

540 words

Problem Statement

Learn how to diagnose and fix poor fuel economy in Ford Explorer (2011-2019). 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 opening the oil drain plug or any other hot components

Symptoms

•Check engine light illuminated
•Decreased miles per gallon (MPG) compared to manufacturer specifications
•Rough engine idle
•Unusual engine noises (e.g., knocking or pinging)
•Increased exhaust emissions
•Frequent need for refueling

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Check tire pressure and condition, ensuring they are inflated to manufacturer specifications
3
Inspect the air filter for cleanliness and proper airflow; replace if dirty
4
Evaluate fuel quality and inspect the fuel system for leaks or blockages
5
Test the fuel injectors for proper operation and spray pattern
6
Check the engine oil level and condition, ensuring it meets the required specifications

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
•Wrench set
•Funnel
•Oil filter wrench

Parts Required

•Air filter
•Fuel system cleaner
•Engine oil
•Oil filter

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Check tire pressure and condition, ensuring they are inflated to manufacturer specifications
3
Inspect the air filter for cleanliness and proper airflow; replace if dirty
4
Evaluate fuel quality and inspect the fuel system for leaks or blockages
5
Test the fuel injectors for proper operation and spray pattern
6
Check the engine oil level and condition, ensuring it meets the required specifications

Solution

1. Preparation

Gather tools and parts for the repair.
Ensure the vehicle is on a level surface and engage the parking brake.
Disconnect the battery to prevent electrical issues during repairs.

2. Inspect and Replace the Air Filter

Remove the air filter housing by loosening clamps or screws.
Take out the old air filter and visually inspect for dirt and debris.
Install a new air filter, ensuring it fits snugly in the housing.
Reassemble the air filter housing and secure it.

3. Fuel System Cleaning

Obtain a fuel system cleaner compatible with the vehicle.
Follow the manufacturer’s instructions to add the cleaner to the fuel tank.
Fill the tank with high-quality fuel to aid in cleaning the injectors and combustion chamber.

4. Tire Maintenance

Check tire pressure using a tire gauge; inflate all tires to the recommended PSI listed on the door placard.
Inspect tires for uneven wear or damage; rotate or replace as necessary.

5. Engine Oil Change

Drain the old engine oil using a wrench to remove the drain plug.
Replace the oil filter with a new one.
Refill the engine with the recommended oil type and quantity, using a funnel for accuracy.