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

575 words

Problem Statement

Learn how to diagnose and fix hesitation during acceleration in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, 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 working on the intake or fuel system.

Symptoms

•Engine stalling during acceleration
•Rough or uneven acceleration
•Reduced power output
•Check engine light illuminated
•Increased fuel consumption
•Unusual engine noises (e.g., backfiring or misfiring)

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 the fuel pressure using a fuel pressure gauge to ensure it meets specifications.
4
Examine the throttle body for carbon buildup or malfunction.
5
Inspect the ignition system components (spark plugs, coils) for wear or failure.
6
Test the transmission fluid level and condition to rule out transmission issues.

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
•Torque wrench
•Throttle body cleaner
•Cleaning rags

Parts Required

•Air filter
•Fuel filter (if applicable)
•Spark plugs
•Ignition coils (if applicable)
•Transmission fluid (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 could affect airflow.
3
Check the fuel pressure using a fuel pressure gauge to ensure it meets specifications.
4
Examine the throttle body for carbon buildup or malfunction.
5
Inspect the ignition system components (spark plugs, coils) for wear or failure.
6
Test the transmission fluid level and condition to rule out transmission issues.

Solution

1. Preparation

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

Tools Required:

OBD-II scanner
Fuel pressure gauge
Socket set
Torque wrench
Cleaning supplies (throttle body cleaner, rags)

2. Clean or Replace Air Filter

Remove the air filter housing cover with the socket set.
Take out the air filter and inspect it for damage or dirt.
Clean or replace the air filter as needed, ensuring a proper seal when reinstalling.

3. Fuel System Inspection and Repair

Connect the fuel pressure gauge to the fuel rail following the manufacturer's specifications.
Start the engine and monitor the fuel pressure; it should be within the specified range (consult service manual).
If pressure is low, check for a clogged fuel filter or failing fuel pump. Replace components as necessary.

4. Throttle Body Cleaning

Remove the throttle body assembly using the socket set.
Clean the throttle body with throttle body cleaner and a rag to remove carbon deposits.
Reinstall the throttle body, ensuring the gasket is intact, and torque to manufacturer specifications.

5. Ignition System Check

Remove the spark plugs using the socket set and inspect for wear or deposits.
Replace any faulty spark plugs and ensure proper gap.
Test ignition coils for resistance and replace any that are out of specification.

6. Transmission Fluid Check

Remove the transmission dipstick and check fluid level and condition (color and odor).
If low or burnt, perform a transmission fluid change according to the manufacturer's specifications.