how to fix a Ford Explorer that is losing power while driving?

Ford Explorer Sixth Generation (2020-present)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

584 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

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Allow the engine to cool before performing any work on it

Symptoms

•Check engine light illuminated
•Engine stalling or misfiring
•Rough acceleration or hesitation
•Decreased fuel efficiency
•Unusual engine noises (e.g., knocking or pinging)
•Exhaust smoke (blue or black)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the air intake system for blockages or leaks, including the air filter and intake hoses
3
Check the fuel system by testing fuel pressure with a fuel pressure gauge
4
Examine the ignition system components, including spark plugs and ignition coils, for wear or damage
5
Inspect the exhaust system for restrictions, such as a clogged catalytic converter
6
Test the Mass Air Flow (MAF) sensor and throttle position sensor (TPS) for proper operation

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
•Torque wrench

Parts Required

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

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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 air intake system for blockages or leaks, including the air filter and intake hoses
3
Check the fuel system by testing fuel pressure with a fuel pressure gauge
4
Examine the ignition system components, including spark plugs and ignition coils, for wear or damage
5
Inspect the exhaust system for restrictions, such as a clogged catalytic converter
6
Test the Mass Air Flow (MAF) sensor and throttle position sensor (TPS) for proper operation

Solution

1. Preparation

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

Tools Required:

OBD-II scanner
Fuel pressure gauge
Multimeter
Socket set
Torque wrench

2. Address Fuel System Issues

Check Fuel Pressure:
- Connect the fuel pressure gauge to the fuel rail test port.
- Turn the ignition to the "On" position without starting the engine and observe the pressure reading. Compare it to manufacturer specifications.
- If the pressure is low, inspect the fuel pump, fuel filter, and fuel lines for blockages or failure.
Replace Faulty Components:
- If the fuel pump is faulty, disconnect the fuel lines and electrical connectors, then remove the fuel pump assembly from the tank.
- Install the new fuel pump, reconnect the lines, and ensure all connections are secure.

3. Inspect and Replace Ignition Components

Check Spark Plugs:
- Remove the spark plugs using a socket set.
- Inspect for wear, carbon buildup, or damage. Replace if necessary.
Replace Ignition Coils:
- Remove the electrical connectors and bolts securing the ignition coils.
- Replace with new ignition coils and reassemble the components.

4. Clean or Replace Air Intake Components

Clean MAF Sensor:
- Remove the MAF sensor from the air intake duct.
- Use MAF cleaner to spray the sensor element carefully and let it dry.
Replace Air Filter:
- Open the air filter housing and remove the old air filter.
- Install a new air filter and secure the housing.