why is my Ford Explorer Fifth Generation (2011-2019) losing power when driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

673 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 Fifth Generation (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 starting work on electrical systems
•Allow the engine to cool before working on the fuel system

Symptoms

•Engine stalling during acceleration
•Hesitation or lag when pressing the gas pedal
•Check engine light illuminated
•Rough idling when stationary
•Poor fuel economy
•Increased engine noise or unusual sounds

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the fuel system for issues, including fuel pressure and fuel filter condition
3
Check the air intake system for blockages or leaks in the intake manifold or air filter
4
Examine the ignition system components, such as spark plugs and ignition coils, for wear or failure
5
Test the battery and alternator to ensure proper charging and electrical supply
6
Inspect exhaust components for blockages, such as a clogged 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
•Multimeter
•Fuel pressure gauge
•Basic hand tools

Parts Required

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

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the fuel system for issues, including fuel pressure and fuel filter condition
3
Check the air intake system for blockages or leaks in the intake manifold or air filter
4
Examine the ignition system components, such as spark plugs and ignition coils, for wear or failure
5
Test the battery and alternator to ensure proper charging and electrical supply
6
Inspect exhaust components for blockages, such as a clogged catalytic converter

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, multimeter, fuel pressure gauge, basic hand tools.
Safety Warnings: Disconnect the battery before starting work on electrical systems. Allow the engine to cool before working on the fuel system.

2. Address Fuel System Issues

Check Fuel Pressure:
- Connect the fuel pressure gauge to the fuel rail.
- Turn the ignition to the "ON" position without starting the engine.
- Read the fuel pressure on the gauge; it should meet manufacturer specifications (typically around 50-60 psi).
Replace Fuel Filter (if necessary):
- Relieve fuel pressure from the system by removing the fuel pump fuse.
- Disconnect the fuel lines from the old filter using the appropriate tools.
- Install the new fuel filter, ensuring the flow direction is correct.
- Reconnect the fuel lines and replace the fuel pump fuse.

3. Inspect and Clean Air Intake

Check Air Filter:
- Remove the air intake cover and take out the air filter.
- Inspect the filter for dirt and debris; clean or replace as necessary.
Inspect Intake Manifold:
- Visually check for cracks or loose connections.
- Use a throttle body cleaner to clean the throttle body and intake manifold if dirty.

4. Examine Ignition System

Inspect Spark Plugs:
- Remove spark plugs using a socket set.
- Inspect for wear, carbon buildup, or damage; replace if necessary.
Check Ignition Coils:
- Test the ignition coils with a multimeter for resistance; replace if they are out of specification.

5. Electrical System Check

Test Battery Voltage:
- Use a multimeter to check the battery voltage; it should read around 12.6 volts when not running.
- If voltage is low, recharge or replace the battery as needed.
Check Alternator Output:
- Start the engine and measure the voltage at the battery terminals; it should read between 13.7 to 14.7 volts.

6. Inspect Exhaust System

Check for Clogged Catalytic Converter:
- If the engine is experiencing back pressure, it may indicate a clogged catalytic converter.
- Perform a back pressure test using a gauge; if readings are too high, replace the catalytic converter.