why does my Ford Explorer Fifth Generation (2011-2019) feel like it's losing power

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

578 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 (2011-2019). 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 the throttle body or working with fuel components.

Symptoms

•Check engine light illuminated
•Engine stalling or misfiring
•Decreased acceleration response
•Poor fuel economy
•Unusual engine noises (e.g., knocking or pinging)
•Increased exhaust emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the air filter for clogs or dirt that may restrict airflow to the engine.
3
Check fuel pressure using a fuel pressure gauge to ensure it meets specifications.
4
Examine ignition components (spark plugs, coils) for wear or damage.
5
Test the mass airflow sensor (MAF) using a multimeter to verify proper operation.
6
Inspect the throttle body for carbon buildup and ensure it operates smoothly.

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
•Throttle body cleaner

Parts Required

•Air filter
•Fuel filter (if applicable)
•Spark plugs
•Throttle body gasket (if applicable)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the air filter for clogs or dirt that may restrict airflow to the engine.
3
Check fuel pressure using a fuel pressure gauge to ensure it meets specifications.
4
Examine ignition components (spark plugs, coils) for wear or damage.
5
Test the mass airflow sensor (MAF) using a multimeter to verify proper operation.
6
Inspect the throttle body for carbon buildup and ensure it operates smoothly.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative terminal of the battery to ensure safety while working on electrical components.
Allow the engine to cool down if it has been running.

2. Replace Air Filter

Remove the air filter housing cover using a socket set.
Take out the old air filter and inspect for dirt and damage.
Install a new, clean air filter, ensuring it fits snugly.
Reattach the air filter housing cover and secure it.

3. Fuel Pressure Check and Repair

Connect the fuel pressure gauge to the fuel rail's Schrader valve.
Start the engine and observe the pressure reading; it should be within the manufacturer’s specifications (typically 30-45 psi).
If pressure is low, check for fuel pump operation and inspect fuel lines for leaks.
Replace the fuel filter if necessary, or consider changing the fuel pump if it’s not delivering adequate pressure.

4. Inspect and Replace Spark Plugs

Remove the ignition coil cover to access the spark plugs.
Use a socket wrench to remove the spark plugs, inspecting them for wear or fouling.
Replace with new spark plugs that meet OEM specifications (typically NGK or Motorcraft).
Reinstall ignition coils and cover.

5. Clean and Inspect Throttle Body

Remove the throttle body from the intake manifold by disconnecting the electrical connector and unbolting it.
Clean the throttle plate and bore with throttle body cleaner and a soft cloth.
Reinstall the throttle body, ensuring a proper seal and reconnecting all electrical connections.