my Ford Explorer Fifth Generation (2011-2019) hesitates when accelerating what should I check

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

604 words

Problem Statement

Learn how to diagnose and fix hesitation during acceleration 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 down before inspecting engine components.

Symptoms

•Engine stalling during acceleration
•Reduced power output
•Rough or inconsistent idle
•Check engine light illuminated
•Poor fuel economy
•Unusual engine noises (e.g., misfiring)

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes that may provide insight into the problem.
2
Inspect the air filter to ensure it is clean and free of obstructions.
3
Check fuel pressure using a fuel pressure gauge to verify that the fuel pump is delivering the correct pressure.
4
Examine the ignition system, including spark plugs and ignition coils, for wear or damage.
5
Inspect the throttle body for carbon buildup or obstructions that could affect airflow.
6
Verify the operation of the Mass Air Flow (MAF) sensor and ensure it is clean and functioning properly.

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
•Socket set
•Throttle body cleaner
•MAF sensor cleaner

Parts Required

•Spark plugs (if replacement is necessary)
•Fuel filter (if low pressure is detected)

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes that may provide insight into the problem.
2
Inspect the air filter to ensure it is clean and free of obstructions.
3
Check fuel pressure using a fuel pressure gauge to verify that the fuel pump is delivering the correct pressure.
4
Examine the ignition system, including spark plugs and ignition coils, for wear or damage.
5
Inspect the throttle body for carbon buildup or obstructions that could affect airflow.
6
Verify the operation of the Mass Air Flow (MAF) sensor and ensure it is clean and functioning properly.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the negative battery terminal to ensure safety during repairs.

2. Inspect and Clean Throttle Body

Tools Required: Socket set, throttle body cleaner, clean cloth
Remove the air intake duct to gain access to the throttle body.
Use throttle body cleaner to spray and clean the inside of the throttle body, removing carbon buildup.
Wipe clean with a cloth and reattach the intake duct securely.

3. Check and Replace Spark Plugs (if necessary)

Tools Required: Socket set, torque wrench, gap gauge
Remove the ignition coils by unbolting and disconnecting the electrical connectors.
Extract the spark plugs using a socket wrench; inspect them for wear or fouling.
If replacement is necessary, install new spark plugs with the correct gap as specified by the manufacturer.
Reinstall the ignition coils, ensuring they are properly seated and bolted down to the proper torque specification.

4. Fuel Pressure Check

Tools Required: Fuel pressure gauge
Locate the fuel rail on the engine and connect the fuel pressure gauge to the test port.
Turn the ignition to the "on" position without starting the engine, and read the fuel pressure. Compare it to the manufacturer's specifications.
If the pressure is low, inspect the fuel pump and fuel filter for issues.

5. Inspect and Clean MAF Sensor

Tools Required: MAF sensor cleaner
Locate the MAF sensor in the air intake duct.
Disconnect the electrical connector and remove the sensor from the duct.
Use MAF sensor cleaner to spray the sensor elements gently; do not touch them.
Reinstall the MAF sensor, ensuring it is secure and the connector is reattached properly.