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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

579 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

Discover how to diagnose and fix loss of power during acceleration in Ford Explorer (2011-2019). Step-by-step guide with symptoms and solutions.

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 related to the intake or fuel systems.

Symptoms

•Check engine light illuminated
•Engine stalling or hesitation during acceleration
•Poor fuel economy
•Unusual engine noises (e.g., knocking or pinging)
•Lack of throttle response
•Excessive exhaust smoke

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential fault codes.
2
Inspect the air filter for clogs or dirt that may restrict airflow.
3
Check fuel pressure to ensure the fuel pump is delivering adequate fuel.
4
Inspect ignition system components (spark plugs, coils) for wear or malfunction.
5
Examine the throttle body for carbon buildup or mechanical issues.
6
Verify the functionality of the mass airflow sensor (MAF) and engine coolant temperature sensor.

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
•Torque wrench
•Fuel pressure gauge
•Cleaning supplies

Parts Required

•Air filter
•Spark plugs
•Ignition coils (if faulty)
•Fuel pump (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential fault codes.
2
Inspect the air filter for clogs or dirt that may restrict airflow.
3
Check fuel pressure to ensure the fuel pump is delivering adequate fuel.
4
Inspect ignition system components (spark plugs, coils) for wear or malfunction.
5
Examine the throttle body for carbon buildup or mechanical issues.
6
Verify the functionality of the mass airflow sensor (MAF) and engine coolant temperature sensor.

Solution

1. Preparation

Gather tools: OBD-II scanner, socket set, torque wrench, fuel pressure gauge, cleaning supplies.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent electrical shock when working on components.

2. Clean Air Filter

Remove the air filter housing cover using a socket set.
Take out the air filter and inspect it for dirt or damage.
If dirty, clean it with compressed air or replace it with a new filter.
Reinstall the air filter and housing cover.

3. Inspect and Replace Spark Plugs

Locate the ignition coils and remove them with a socket set.
Unplug the electrical connectors from the ignition coils.
Remove the spark plugs using a spark plug socket.
Inspect the plugs for wear or deposits; replace if necessary with OEM specifications.
Reinstall the spark plugs and ignition coils, ensuring proper torque per manufacturer specifications.

4. Check and Clean Throttle Body

Locate the throttle body and disconnect the air intake duct.
Remove the throttle body from the intake manifold using a socket set.
Clean the throttle body with an appropriate cleaner and a soft cloth.
Reinstall the throttle body, ensuring proper torque of the mounting bolts.

5. Test Fuel Pressure

Connect the fuel pressure gauge to the fuel rail.
Turn the ignition to the “ON” position (do not start the engine) and check the pressure reading.
If the pressure is below specifications, inspect the fuel pump and replace if faulty.