why is my Ford Explorer hesitating when I accelerate

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

568 words

Problem Statement

Learn how to diagnose and fix acceleration hesitation in Ford Explorer. 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 battery before working on electrical systems.
•Allow engine to cool before opening the throttle body or fuel system components.

Symptoms

•Check engine light illuminated
•Rough acceleration
•Engine misfiring
•Decreased fuel efficiency
•Unusual engine noises (e.g., sputtering)
•Poor throttle response

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 damage that could impede airflow.
3
Check the fuel pressure with a fuel pressure gauge to ensure proper fuel delivery.
4
Examine ignition components such as spark plugs and ignition coils for wear or failure.
5
Inspect the throttle body for carbon buildup or mechanical issues.
6
Test the mass airflow (MAF) sensor and check for proper readings.

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
•Spark plug socket
•Ratchet
•Fuel pressure gauge
•Screwdriver set
•Throttle body cleaner

Parts Required

•Spark plugs
•Mass airflow sensor (if defective)
•Fuel filter (if clogged)
•Fuel pump (if faulty)

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 the air filter for clogs or damage that could impede airflow.
3
Check the fuel pressure with a fuel pressure gauge to ensure proper fuel delivery.
4
Examine ignition components such as spark plugs and ignition coils for wear or failure.
5
Inspect the throttle body for carbon buildup or mechanical issues.
6
Test the mass airflow (MAF) sensor and check for proper readings.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect and Replace Spark Plugs

Sub-steps:
1. Remove the engine cover (if applicable) using the socket set.
2. Disconnect the ignition coils from the spark plugs.
3. Remove the old spark plugs using a spark plug socket and ratchet.
4. Inspect the old spark plugs for wear. Replace with new spark plugs if necessary (check gap specifications).
5. Reinstall the ignition coils and engine cover.
Tools Required: Socket set, spark plug socket, ratchet.

3. Clean or Replace Mass Airflow Sensor

Sub-steps:
1. Locate the MAF sensor (usually near the air intake).
2. Disconnect the electrical connector and remove the sensor from the intake duct.
3. Clean the sensor using MAF cleaner or replace it if damaged.
4. Reinstall the cleaned/replaced sensor and reconnect the electrical connector.
Tools Required: Screwdriver set, MAF cleaner.

4. Fuel System Inspection and Repair

Sub-steps:
1. Connect the fuel pressure gauge to the fuel rail.
2. Start the engine and monitor the fuel pressure; it should be within the manufacturer’s specifications.
3. If pressure is low, inspect the fuel pump, fuel filter, and fuel lines for clogs or failures.
4. Replace components as necessary (e.g., fuel filter or fuel pump).
Tools Required: Fuel pressure gauge, socket set.

5. Throttle Body Cleaning

Sub-steps:
1. Disconnect the throttle body from the intake manifold.
2. Remove any sensors attached to the throttle body.
3. Clean the throttle plate and surrounding areas with throttle body cleaner.
4. Reassemble the throttle body and reconnect sensors.
Tools Required: Throttle body cleaner, socket set.