why does my Ford Explorer Fifth Generation (2011-2019) engine hesitate during acceleration

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

581 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.
•Allow the engine to cool before opening any components related to the fuel system.

Symptoms

•Hesitation or stumbling during acceleration
•Check engine light illuminated
•Poor fuel economy
•Rough idle
•Engine stalling at low speeds

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect fuel pressure using a fuel pressure gauge to ensure adequate fuel delivery.
3
Check the condition of spark plugs for wear or fouling.
4
Inspect the air filter for clogs or restrictions that may affect airflow.
5
Examine the throttle body for carbon buildup or obstructions.
6
Test the mass air flow (MAF) sensor for proper operation and accuracy.

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
•Fuel filter (if applicable)
•Mass air flow (MAF) sensor (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect fuel pressure using a fuel pressure gauge to ensure adequate fuel delivery.
3
Check the condition of spark plugs for wear or fouling.
4
Inspect the air filter for clogs or restrictions that may affect airflow.
5
Examine the throttle body for carbon buildup or obstructions.
6
Test the mass air flow (MAF) sensor for proper operation and accuracy.

Solution

1. Preparation

Gather all tools and materials needed for the repair.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plugs

Sub-steps:
1. Remove the ignition coil covers (if applicable) using a socket set.
2. Disconnect the ignition coils and remove them from the spark plugs.
3. Use a spark plug socket to remove the old spark plugs.
4. Inspect the old plugs for signs of wear or deposits.
5. Install new spark plugs with the recommended torque (usually 13-15 ft-lbs).
6. Reconnect the ignition coils and replace any covers.

3. Clean Throttle Body

Sub-steps:
1. Remove the air intake duct to access the throttle body.
2. Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
3. Ensure the throttle plate moves freely without sticking.
4. Reattach the air intake duct securely.

4. Replace Fuel Filter (if applicable)

Sub-steps:
1. Locate the fuel filter (may be in-line or part of the fuel pump assembly).
2. Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
3. Disconnect the fuel lines from the filter using appropriate tools.
4. Install the new fuel filter, ensuring correct orientation and tightening all connections.
5. Reinstall the fuel pump relay and check for leaks.

5. Test and Replace MAF Sensor (if needed)

Sub-steps:
1. Disconnect the MAF sensor connector.
2. Remove the MAF sensor from the air intake duct.
3. Inspect the sensor for dirt or damage and clean it with MAF sensor cleaner.
4. If the sensor is faulty, replace it with a new one and reconnect the electrical connector.