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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

526 words

Problem Statement

Learn how to diagnose and fix hesitation during acceleration in the 2011-2019 Ford Explorer. 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 performing any maintenance

Symptoms

•Hesitation or stumbling during acceleration
•Engine misfires or rough running
•Decreased fuel efficiency
•Illuminated check engine light
•Unusual noises from the engine or exhaust system

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored diagnostic trouble codes (DTCs)
2
Inspect the air intake system for blockages or leaks, including the air filter and intake hoses
3
Check fuel pressure using a fuel pressure gauge to ensure proper fuel delivery
4
Examine the ignition system components, including spark plugs and ignition coils, for wear or damage
5
Test the throttle position sensor (TPS) for proper operation using a multimeter
6
Inspect the exhaust system for restrictions or leaks that could affect engine performance

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
•Torque wrench

Parts Required

•Air filter
•Spark plugs
•Throttle body gasket (if applicable)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored diagnostic trouble codes (DTCs)
2
Inspect the air intake system for blockages or leaks, including the air filter and intake hoses
3
Check fuel pressure using a fuel pressure gauge to ensure proper fuel delivery
4
Examine the ignition system components, including spark plugs and ignition coils, for wear or damage
5
Test the throttle position sensor (TPS) for proper operation using a multimeter
6
Inspect the exhaust system for restrictions or leaks that could affect engine performance

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is cool.
Disconnect the battery to prevent electrical shorts.

2. Replace Air Filter

Locate the air filter housing.
Remove the screws or clips securing the housing.
Take out the old air filter and replace it with a new one.
Reassemble the air filter housing and secure it properly.

3. Replace Spark Plugs

Remove the ignition coil covers (if applicable).
Disconnect the ignition coils from the spark plugs.
Use a socket wrench to remove the old spark plugs.
Install new spark plugs to the manufacturer's torque specifications (typically around 13-15 ft-lbs).
Reconnect the ignition coils and covers.

4. Clean or Replace Throttle Body

Disconnect the throttle body connector.
Remove the throttle body from the intake manifold by unscrewing the bolts.
Clean the throttle body with throttle body cleaner and a soft cloth.
Reinstall the throttle body and reconnect the connector.

5. Fuel System Inspection

Attach a fuel pressure gauge to the fuel rail.
Start the engine and check the fuel pressure against manufacturer specifications (typically around 55-65 psi).
If pressure is low, consider replacing the fuel pump or fuel filter.