why does my Ford Explorer Fifth Generation (2011-2019) engine sputter on acceleration

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

591 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix engine sputtering during acceleration in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

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 servicing fuel components

Symptoms

•Engine sputtering or misfiring during acceleration
•Decreased power and responsiveness when pressing the accelerator
•Rough idle when the vehicle is stationary
•Check engine light illuminated
•Poor fuel economy
•Increased emissions

Diagnostic Steps

1
Scan the vehicle's computer for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the spark plugs and ignition coils for wear or damage; replace if necessary
3
Check the fuel pressure using a fuel pressure gauge to ensure it meets the manufacturer's specifications
4
Examine the air filter for clogs and replace it if dirty
5
Inspect the mass air flow (MAF) sensor for dirt or failure; clean or replace as needed
6
Look for vacuum leaks in the intake manifold or vacuum hoses

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
•Spark plug socket
•Fuel pressure gauge
•Multimeter
•Vacuum gauge
•Basic hand tools

Parts Required

•Spark plugs
•Ignition coils (if needed)
•Fuel filter (if applicable)
•Mass air flow sensor (if needed)
•Air filter

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Diagnostic Steps

1
Scan the vehicle's computer for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the spark plugs and ignition coils for wear or damage; replace if necessary
3
Check the fuel pressure using a fuel pressure gauge to ensure it meets the manufacturer's specifications
4
Examine the air filter for clogs and replace it if dirty
5
Inspect the mass air flow (MAF) sensor for dirt or failure; clean or replace as needed
6
Look for vacuum leaks in the intake manifold or vacuum hoses

Solution

1. Preparation

Gather tools and parts needed for the repair.
Tools Required: OBD-II scanner, spark plug socket, fuel pressure gauge, multimeter, vacuum gauge, basic hand tools.
Safety Warnings: Disconnect the battery before working on electrical systems.

2. Replace Spark Plugs and Ignition Coils

Remove the engine cover if applicable to access the spark plugs.
Disconnect the ignition coil connectors.
Unbolt the ignition coils and carefully pull them out.
Remove the spark plugs using a spark plug socket; inspect for wear or fouling.
Install new spark plugs to the specified torque (typically 13-16 lb-ft).
Reinstall the ignition coils and reconnect the connectors.

3. Check and Replace Fuel Filter (if applicable)

Locate the fuel filter (often integrated with the fuel pump in the tank).
Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
Disconnect the fuel lines from the filter and remove it.
Install a new fuel filter and reconnect the fuel lines securely.

4. Clean or Replace MAF Sensor

Locate the MAF sensor in the air intake duct.
Disconnect the electrical connector and remove the MAF sensor from the duct.
Clean the MAF sensor using MAF cleaner (avoid touching the sensor element).
If the sensor is faulty, install a new MAF sensor and reconnect the wiring.

5. Inspect and Replace Air Filter

Open the air filter housing.
Remove the old air filter and inspect the housing for debris.
Install a new air filter ensuring it fits snugly.
Close the air filter housing securely.