what causes the Ford Explorer Fifth Generation (2011-2019) to hesitate during acceleration

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

578 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

Discover how to diagnose and fix engine hesitation during acceleration in Ford Explorer (2011-2019). Step-by-step guide with symptoms and solutions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before opening any components to avoid burns.

Symptoms

•Engine stalling during acceleration
•Rough or uneven acceleration
•Loss of power when pressing the gas pedal
•Check engine light illuminated
•Poor fuel economy
•Engine misfires

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 could affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure adequate fuel delivery.
4
Inspect ignition components, including spark plugs and ignition coils, for wear or damage.
5
Examine the throttle body for carbon buildup or malfunction.
6
Check for vacuum leaks in hoses or intake manifold.

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
•Socket set
•Fuel pressure gauge
•Multimeter
•Cleaning supplies (throttle body cleaner)
•Screwdrivers

Parts Required

•Air filter
•Spark plugs
•Fuel filter (if applicable)
•Vacuum hoses (if damaged)

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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 could affect airflow.
3
Check fuel pressure using a fuel pressure gauge to ensure adequate fuel delivery.
4
Inspect ignition components, including spark plugs and ignition coils, for wear or damage.
5
Examine the throttle body for carbon buildup or malfunction.
6
Check for vacuum leaks in hoses or intake manifold.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, fuel pressure gauge, multimeter, cleaning supplies (throttle body cleaner), screwdrivers.
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Replace Air Filter

Locate the air filter housing and remove the clips or screws.
Take out the old air filter and inspect for dirt or damage.
Replace with a new air filter that meets OEM specifications.
Reassemble the housing and secure it properly.

3. Fuel Pressure Test

Locate the fuel pressure test port, usually found on the fuel rail.
Connect the fuel pressure gauge and turn the ignition to the "on" position without starting the engine.
Observe the pressure reading; it should match the manufacturer's specifications.
If the pressure is low, consider replacing the fuel pump or checking the fuel filter.

4. Inspect and Replace Spark Plugs

Remove the ignition coils using a socket set, noting their placement.
Remove the spark plugs using a spark plug socket and inspect for wear, carbon buildup, or damage.
Replace with new spark plugs that meet OEM specifications, ensuring proper torque (typically 12-15 lb-ft).
Reinstall the ignition coils and secure them properly.

5. Clean the Throttle Body

Remove the air intake duct to access the throttle body.
Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
Ensure the throttle plate operates smoothly without sticking.
Reassemble the intake duct securely.

6. Check for Vacuum Leaks

Inspect all vacuum hoses for cracks or disconnections.
Use a smoke machine or soapy water to identify leaks around intake manifold gaskets.
Replace any damaged hoses or gaskets as necessary.