why does my Ford Explorer Fifth Generation (2011-2019) engine hesitate when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

563 words

Problem Statement

Learn how to diagnose and fix engine hesitation 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 disconnecting any fuel lines.

Symptoms

•Engine stalling during acceleration
•Loss of power when pressing the accelerator
•Rough or uneven idle
•Check engine light illuminated
•Poor fuel economy
•Increased engine noise

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential faults.
2
Inspect the air intake system for blockages or leaks.
3
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning properly.
4
Examine the throttle body for carbon build-up or mechanical issues.
5
Inspect ignition components, including spark plugs and ignition coils, for wear or damage.
6
Test the mass airflow sensor (MAF) for proper operation using a multimeter.

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
•Throttle body cleaner
•Socket set
•Torque wrench
•Fuel line disconnect tool

Parts Required

•Spark plugs
•Ignition coils (if necessary)
•Fuel filter (if necessary)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential faults.
2
Inspect the air intake system for blockages or leaks.
3
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning properly.
4
Examine the throttle body for carbon build-up or mechanical issues.
5
Inspect ignition components, including spark plugs and ignition coils, for wear or damage.
6
Test the mass airflow sensor (MAF) for proper operation using a multimeter.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Clean the Throttle Body

Tools Required: Throttle body cleaner, clean cloths, socket set.
Remove the air intake duct connected to the throttle body.
Use throttle body cleaner and a cloth to clean the inside of the throttle body thoroughly.
Reassemble the air intake duct securely.

3. Replace Spark Plugs and Ignition Coils (if necessary)

Tools Required: Socket set, torque wrench.
Remove the engine cover if applicable.
Disconnect the electrical connectors from the ignition coils.
Remove the bolts holding the ignition coils in place and carefully pull them out.
Replace old spark plugs with new ones, ensuring they are gapped correctly.
Install new ignition coils, securing them with bolts to the manufacturer’s specified torque.

4. Test and Replace Fuel Filter (if necessary)

Tools Required: Fuel line disconnect tool, socket set.
Locate the fuel filter and relieve fuel system pressure as per the manufacturer’s guidelines.
Disconnect the fuel lines from the filter using the fuel line disconnect tool.
Replace the old fuel filter with a new one, ensuring proper orientation and secure connections.

5. Reconnect Battery and Test Drive

Reconnect the battery terminals.
Start the engine and allow it to idle for a few minutes before taking it for a test drive to verify the repair.