my Ford Explorer Fifth Generation (2011-2019) engine hesitates when I accelerate, what’s the issue?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

628 words

Problem Statement

Learn how to diagnose and fix engine hesitation during acceleration in Ford Explorer (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.
•Ensure the engine is cool before working on components to avoid burns.

Symptoms

•Engine hesitation during acceleration
•Check engine light illuminated
•Rough idle when stationary
•Decreased fuel economy
•Loss of power on acceleration
•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 the air filter for clogs or restrictions that may impact airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is operating within specifications.
4
Examine ignition components, including spark plugs and ignition coils, for wear or damage.
5
Inspect the throttle body for carbon buildup or mechanical binding.
6
Verify the functionality of the mass air flow (MAF) sensor with a multimeter or scan tool.

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
•Multimeter
•Socket set
•Cleaning supplies

Parts Required

•Air filter
•Fuel filter (if applicable)
•Spark plugs
•Ignition coils (if applicable)
•MAF sensor (if applicable)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the air filter for clogs or restrictions that may impact airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is operating within specifications.
4
Examine ignition components, including spark plugs and ignition coils, for wear or damage.
5
Inspect the throttle body for carbon buildup or mechanical binding.
6
Verify the functionality of the mass air flow (MAF) sensor with a multimeter or scan tool.

Solution

1. Preparation

Tools Required: OBD-II scanner, fuel pressure gauge, multimeter, socket set, cleaning supplies.
Ensure the vehicle is parked on a level surface.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Clean or Replace Air Filter

Remove the air filter housing cover using a socket set.
Take out the air filter and inspect it for dirt and damage.
Clean the air filter with compressed air or replace it if necessary.
Reinstall the air filter and housing cover securely.

3. Check and Replace Fuel Filter (if applicable)

Locate the fuel filter (refer to the service manual for the exact location).
Release fuel pressure using the Schrader valve on the fuel rail.
Disconnect fuel lines from the filter carefully.
Replace the old fuel filter with a new one, ensuring proper orientation.
Reconnect the fuel lines and check for leaks.

4. Inspect and Replace Spark Plugs and Ignition Coils

Remove the ignition coil covers if present.
Disconnect the electrical connectors and remove the ignition coils using a socket set.
Remove the spark plugs with a spark plug socket.
Inspect the spark plugs for wear; replace with new ones if necessary.
Reinstall new ignition coils and reconnect the electrical connectors.

5. Clean Throttle Body

Remove the throttle body from the intake manifold (take care with the throttle position sensor).
Use throttle body cleaner and a soft cloth to clean the internal surfaces of the throttle body.
Ensure no cleaner residue is left before reinstalling the throttle body.

6. Test and Replace MAF Sensor (if necessary)

Disconnect the MAF sensor and inspect for dirt or damage.
Clean the sensor with MAF cleaner if needed or replace it if faulty.
Reconnect the MAF sensor securely.