how to fix the fuel economy issue in my Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

675 words

Problem Statement

Learn how to diagnose and fix fuel economy issues in Ford Explorer Fifth Generation (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

Symptoms

•Decreased fuel efficiency (lower MPG)
•Check engine light illuminated
•Unusual engine noise (knocking or pinging)
•Rough idle or stalling
•Increased emissions
•Fuel odor outside the vehicle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Check tire pressure to ensure they are inflated to the manufacturer’s specifications.
3
Inspect the air filter for dirt or blockages and replace if necessary.
4
Examine fuel injectors for clogs or leaks.
5
Test the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
6
Evaluate the condition of the spark plugs and ignition system for wear or damage.

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
•Socket set
•Torque wrench
•Fuel pressure gauge
•Screwdriver or pliers

Parts Required

•Air filter
•Fuel injectors (if needed)
•Spark plugs

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Check tire pressure to ensure they are inflated to the manufacturer’s specifications.
3
Inspect the air filter for dirt or blockages and replace if necessary.
4
Examine fuel injectors for clogs or leaks.
5
Test the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
6
Evaluate the condition of the spark plugs and ignition system for wear or damage.

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.

2. Replace Air Filter

Tools Required: Screwdriver or pliers, replacement air filter.
Sub-steps:
1. Open the hood and locate the air filter housing.
2. Remove the screws or clips holding the air filter cover.
3. Take out the old air filter and inspect for dirt and debris.
4. Install the new air filter, ensuring it fits snugly in the housing.
5. Reattach the cover and secure it with screws or clips.

3. Clean or Replace Fuel Injectors

Tools Required: Fuel injector cleaner, cleaning kit or replacement injectors.
Sub-steps:
1. If using a cleaning kit, follow the manufacturer’s instructions to connect it to the fuel rail.
2. Run the engine as directed to allow the cleaner to circulate.
3. If replacing, detach the fuel rail by unscrewing the bolts and disconnecting the electrical connectors.
4. Remove the old injectors and install the new ones, ensuring a proper seal with O-rings.
5. Reattach the fuel rail and reconnect all lines and connectors.

4. Inspect and Replace Spark Plugs

Tools Required: Socket set, torque wrench, new spark plugs.
Sub-steps:
1. Remove the ignition coil cover to access the spark plugs.
2. Disconnect the ignition coils and remove them from the spark plugs.
3. Use a socket to remove the old spark plugs.
4. Check the gap on the new spark plugs and adjust as necessary.
5. Install the new spark plugs and torque them to the manufacturer’s specifications.
6. Reconnect the ignition coils and replace the cover.

5. Check Tire Pressure

Tools Required: Tire pressure gauge, air compressor.
Sub-steps:
1. Use the tire pressure gauge to measure the pressure in each tire.
2. Refer to the driver’s door jamb for the recommended tire pressure.
3. Inflate any low tires to the correct pressure using an air compressor.