why does my Ford Explorer Fifth Generation (2011-2019) struggle to accelerate after a stop?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

642 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

Learn how to diagnose and fix acceleration issues 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 opening any components to avoid burns.

Symptoms

•Engine stalling when attempting to accelerate
•Hesitation or lag during initial acceleration
•Unusual engine noise or revving without corresponding power
•Check engine light illuminated
•Poor fuel economy
•Transmission slipping or harsh shifting

Diagnostic Steps

1
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
2
Inspect the throttle body for carbon buildup or obstructions that may hinder airflow.
3
Check for vacuum leaks in hoses connected to the intake manifold.
4
Evaluate the transmission fluid level and condition; look for burnt smell or discoloration.
5
Perform a fuel pressure test to ensure the fuel pump is delivering adequate pressure.
6
Inspect the air filter for clogging or dirt that could restrict airflow.
7
Test the Mass Air Flow (MAF) sensor for proper operation using a multimeter.

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
•Throttle body cleaner
•Soft brush
•Microfiber cloth
•Socket set
•Fuel pressure gauge
•Screwdriver

Parts Required

•New air filter
•Transmission fluid
•Throttle body gasket (if removed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
2
Inspect the throttle body for carbon buildup or obstructions that may hinder airflow.
3
Check for vacuum leaks in hoses connected to the intake manifold.
4
Evaluate the transmission fluid level and condition; look for burnt smell or discoloration.
5
Perform a fuel pressure test to ensure the fuel pump is delivering adequate pressure.
6
Inspect the air filter for clogging or dirt that could restrict airflow.
7
Test the Mass Air Flow (MAF) sensor for proper operation using a multimeter.

Solution

1. Preparation

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

2. Clean the Throttle Body

Tools Required: Throttle body cleaner, soft brush, microfiber cloth.
Remove the air intake duct connected to the throttle body.
Spray throttle body cleaner onto the throttle plate and use the brush to gently scrub any deposits.
Wipe clean with a microfiber cloth and reassemble the intake duct.

3. Inspect and Replace Air Filter

Tools Required: None specific; may need a screwdriver for clamps.
Open the air filter housing and remove the old air filter.
Inspect for dirt and damage. Replace with a new filter.
Reassemble the air filter housing securely.

4. Check and Replace Transmission Fluid

Tools Required: Socket set, transmission fluid pump, new transmission fluid.
Remove the transmission fluid pan or dipstick (depending on the model) to check fluid level.
If low or burnt, drain the old fluid and replace it with the manufacturer-recommended fluid.
Reassemble the pan or dipstick and ensure it is secure.

5. Fuel System Inspection

Tools Required: Fuel pressure gauge.
Locate the fuel pressure test port on the fuel rail.
Connect the fuel pressure gauge and turn the ignition key to the "on" position (do not start the engine).
Check if the pressure matches manufacturer specifications; if not, consider replacing the fuel pump or filter.

6. Inspect for Vacuum Leaks

Tools Required: Smoke machine (optional) or soapy water.
Visually inspect all vacuum lines for cracks or disconnections.
Use a smoke machine to detect leaks if available; otherwise, apply soapy water to suspected areas and look for bubbling.
Replace any damaged hoses.