why is my Ford Explorer losing power on the highway

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

548 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 power loss issues in your 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 opening any components.

Symptoms

•Check engine light illuminated
•Engine stalling or hesitation during acceleration
•Decreased throttle response
•Rough idle when the vehicle is stationary
•Unusual noises from the engine compartment
•Increased fuel consumption

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes.
2
Inspect the air intake system for blockages, leaks, or damaged components.
3
Check the fuel system for proper pressure using a fuel pressure gauge.
4
Test the ignition system components, including spark plugs and ignition coils.
5
Inspect the exhaust system for restrictions or damage, including the catalytic converter.
6
Evaluate the condition of the engine oil and other fluid levels.

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
•Socket set
•Torque wrench
•Screwdriver set
•Vacuum gauge
•Line wrenches
•Jack and jack stands

Parts Required

•Air filter
•Fuel filter
•Spark plugs
•Ignition coils (if faulty)
•Catalytic converter (if damaged)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes.
2
Inspect the air intake system for blockages, leaks, or damaged components.
3
Check the fuel system for proper pressure using a fuel pressure gauge.
4
Test the ignition system components, including spark plugs and ignition coils.
5
Inspect the exhaust system for restrictions or damage, including the catalytic converter.
6
Evaluate the condition of the engine oil and other fluid levels.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to ensure safety during repairs.
Allow the engine to cool before starting work on any components.

2. Inspect and Repair the Air Intake System

Tools Required: Screwdriver set, vacuum gauge
Remove the air filter and inspect it for dirt or damage; replace if necessary.
Check the intake duct for cracks or loose connections and replace or reseal as needed.

3. Test and Repair the Fuel System

Tools Required: Fuel pressure gauge, line wrenches
Connect the fuel pressure gauge to the fuel rail and turn the ignition on without starting the engine; check for proper fuel pressure according to manufacturer specifications.
If pressure is low, inspect the fuel pump and fuel filter for issues; replace the fuel filter if clogged and consider replacing the fuel pump if it’s malfunctioning.

4. Inspect and Replace Ignition Components

Tools Required: Socket set, torque wrench
Remove the ignition coils and spark plugs; inspect for wear and carbon buildup.
Replace spark plugs with the manufacturer-recommended type and torque them to specifications.
Test ignition coils with a multimeter and replace any that are faulty.

5. Evaluate and Repair the Exhaust System

Tools Required: Jack and jack stands, exhaust pipe cutter
Inspect the exhaust system for any visible leaks or blockages, especially around the catalytic converter.
If the catalytic converter is damaged or clogged, replace it following manufacturer's guidelines.