why does my Ford Explorer lose power while driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

557 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 power loss issues 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 the battery before working on electrical systems.
•Allow the engine to cool before inspecting or replacing components.

Symptoms

•Engine stalling intermittently
•Sudden loss of acceleration
•Rough engine idle
•Check engine light illuminated
•Poor fuel economy
•Increased engine temperature

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check fuel levels and ensure the fuel pump is functioning properly.
3
Inspect air filter for clogs or restrictions to airflow.
4
Examine spark plugs for wear or fouling.
5
Test the ignition system components, including coils and wiring.
6
Evaluate the exhaust system for blockages or leaks, particularly in the catalytic converter.

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
•Screwdriver set
•Multimeter
•Torque wrench

Parts Required

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

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check fuel levels and ensure the fuel pump is functioning properly.
3
Inspect air filter for clogs or restrictions to airflow.
4
Examine spark plugs for wear or fouling.
5
Test the ignition system components, including coils and wiring.
6
Evaluate the exhaust system for blockages or leaks, particularly in the catalytic converter.

Solution

1. Preparation

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

2. Inspect and Replace Air Filter

Remove the air filter housing cover using a screwdriver.
Take out the old air filter and inspect for any dirt or damage.
Install a new air filter, ensuring it fits securely.
Reattach the air filter housing cover and tighten screws.

3. Check Fuel System

Locate the fuel pump relay and fuel filter.
Test the fuel pump operation by turning on the ignition (without starting the engine) and listening for the pump's sound.
If necessary, replace the fuel filter.
If the fuel pump is faulty, remove and replace it, ensuring to relieve fuel system pressure beforehand.

4. Inspect and Replace Spark Plugs

Remove the ignition coil using a socket wrench and disconnect the electrical connector.
Take out the spark plug using a spark plug socket and inspect for wear or carbon buildup.
Replace with new spark plugs, ensuring proper gap settings according to manufacturer specifications.
Reinstall the ignition coils.

5. Test Ignition System

Use a multimeter to check the resistance of the ignition coils.
Replace any faulty coils.
Inspect wiring for damage and repair as needed.

6. Examine Exhaust System

Visually inspect the exhaust system for any visible leaks or damage.
Use a pressure gauge to test for back pressure in the exhaust.
If blockages are found, replace the catalytic converter or repair exhaust leaks.