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

555 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 loss of power during acceleration in Ford Explorer (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 battery before working on electrical systems.
•Allow engine to cool before opening the air intake or exhaust systems.

Symptoms

•Loss of power when accelerating
•Engine stalling or hesitation
•Poor fuel economy
•Check engine light illuminated
•Unusual noises from the engine or exhaust
•Rough idle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the air intake system for blockages or leaks.
3
Check the fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
4
Examine the ignition system components, including spark plugs and coils, for wear or failure.
5
Inspect the exhaust system for restrictions or damage, particularly the catalytic converter.
6
Test the throttle position sensor (TPS) and Mass Air Flow (MAF) sensor functionality with 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
•Fuel pressure gauge
•Multimeter
•Socket set
•Throttle body cleaner

Parts Required

•Air filter
•Fuel filter
•Spark plugs
•Ignition coils (if needed)
•Throttle position sensor (if faulty)
•Mass air flow sensor (if faulty)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the air intake system for blockages or leaks.
3
Check the fuel pressure using a fuel pressure gauge to ensure proper fuel delivery.
4
Examine the ignition system components, including spark plugs and coils, for wear or failure.
5
Inspect the exhaust system for restrictions or damage, particularly the catalytic converter.
6
Test the throttle position sensor (TPS) and Mass Air Flow (MAF) sensor functionality with a multimeter.

Solution

1. Preparation

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

2. Inspect and Clean Air Intake System

Remove the air filter and inspect for dirt or damage.
Clean the air intake duct and throttle body using throttle body cleaner.
Reinstall the air filter and ensure all connections are secure.

3. Check Fuel System

Connect the fuel pressure gauge to the fuel rail.
Turn the ignition to the "On" position (do not start the engine) and check the fuel pressure reading against the manufacturer's specifications (typically around 50-60 psi for the Explorer).
If pressure is low, inspect the fuel pump, fuel filter, and fuel lines for clogs or failures.

4. Inspect Ignition System

Remove spark plugs and inspect for wear, carbon buildup, or damage.
Replace spark plugs if necessary with OEM or equivalent parts, ensuring proper gap settings.
Test ignition coils for resistance and replace any faulty coils.

5. Examine Exhaust System

Inspect the exhaust system for any visible damage or leaks.
Check the catalytic converter for clogs by tapping it gently; a rattle indicates internal failure.
Replace the catalytic converter if it is restricted or damaged.

6. Test and Replace Sensors

Using a multimeter, check the TPS and MAF sensor for proper voltage output.
Replace any faulty sensors with OEM parts following the manufacturer's instructions.