why does my Ford Explorer Fifth Generation (2011-2019) have poor acceleration after a stop

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

566 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 poor acceleration issues in Ford Explorer Fifth Generation (2011-2019). 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.
•Relieve fuel pressure before servicing the fuel system.

Symptoms

•Check engine light illuminated
•Delay in throttle response when accelerating
•Engine hesitation during take-off
•Poor fuel economy
•Unusual engine noise or vibration upon acceleration

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes related to the engine or transmission.
2
Inspect the air filter for clogs or restrictions that could affect airflow.
3
Check the throttle body for carbon buildup or malfunction.
4
Test the fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
5
Examine the transmission fluid level and condition for any signs of contamination or low levels.
6
Inspect the mass air flow (MAF) sensor for dirt or malfunction.

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
•Screwdrivers
•Fuel pressure gauge
•Clean cloths
•Throttle body cleaner
•MAF cleaner

Parts Required

•Air filter
•Fuel filter
•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 fault codes related to the engine or transmission.
2
Inspect the air filter for clogs or restrictions that could affect airflow.
3
Check the throttle body for carbon buildup or malfunction.
4
Test the fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
5
Examine the transmission fluid level and condition for any signs of contamination or low levels.
6
Inspect the mass air flow (MAF) sensor for dirt or malfunction.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent electrical shorts.
Allow the engine to cool before starting work.

2. Clean or Replace Air Filter

Remove the air filter housing cover using a screwdriver.
Take out the air filter and inspect it for dirt and debris.
If dirty, clean it with compressed air or replace it with a new filter.
Reassemble the air filter housing cover and secure it.

3. Clean the Throttle Body

Remove the throttle body using a socket set.
Spray throttle body cleaner on the interior surfaces and scrub with a soft cloth or brush.
Ensure the throttle plate can move freely without obstruction.
Reinstall the throttle body and reconnect any electrical connectors.

4. Check and Replace Fuel Filter

Locate the fuel filter and relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
Disconnect the fuel lines using a line wrench.
Remove the old fuel filter and install a new one, ensuring proper orientation.
Reconnect the fuel lines and fuse.

5. Inspect and Clean MAF Sensor

Locate the MAF sensor in the intake duct.
Carefully disconnect the electrical connector.
Remove the MAF sensor and spray it with MAF cleaner.
Allow it to dry completely before reinstalling it.

6. Add Transmission Fluid (if needed)

Check the transmission fluid level using the dipstick.
If low, add the appropriate type of transmission fluid as specified in the owner's manual.
Ensure the fluid is at the proper level and check for any leaks.