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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

555 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 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 touching any components.

Symptoms

•Loss of acceleration during driving
•Engine stalling or hesitation
•Poor fuel economy
•Illuminated check engine light
•Unusual engine noises (e.g., knocking or sputtering)
•Increased exhaust emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the air intake system for blockages or leaks.
3
Check fuel pressure using a fuel pressure gauge to ensure proper delivery to the engine.
4
Inspect spark plugs for wear and proper gap settings.
5
Test the throttle position sensor (TPS) for proper voltage output.
6
Check for vacuum leaks in hoses and intake manifold.

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
•Line wrench
•Torque wrench
•Screwdrivers

Parts Required

•Fuel filter
•Spark plugs
•Throttle position sensor (if faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the air intake system for blockages or leaks.
3
Check fuel pressure using a fuel pressure gauge to ensure proper delivery to the engine.
4
Inspect spark plugs for wear and proper gap settings.
5
Test the throttle position sensor (TPS) for proper voltage output.
6
Check for vacuum leaks in hoses and intake manifold.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Address Fuel Delivery Issues

Fuel Pressure Check
- Connect a fuel pressure gauge to the fuel rail.
- Turn the ignition key to the ON position (do not start) and check reading against specifications (usually 30-45 psi).
- If pressure is low, inspect the fuel pump and fuel filter for blockages or failures.
Fuel Filter Replacement
- Locate the fuel filter (often under the vehicle near the fuel tank).
- Use a line wrench to disconnect the fuel lines.
- Remove the mounting bracket bolts and replace the old filter with a new one.
- Reconnect fuel lines securely and check for leaks.

3. Inspect and Replace Spark Plugs

Remove Ignition Coils
- Unplug the electrical connectors from the ignition coils.
- Remove the bolts securing the coils and pull them out.
Replace Spark Plugs
- Using a spark plug socket, remove old spark plugs.
- Check the gap on new plugs and adjust if necessary.
- Install new spark plugs, tightening to manufacturer specifications (usually 12-15 ft-lbs).
- Reinstall ignition coils and connectors.

4. Throttle Position Sensor (TPS) Replacement

Locate the TPS
- Find the throttle body and identify the TPS mounted on it.
Remove and Replace TPS
- Disconnect the electrical connector.
- Remove the screws securing the TPS and take it off.
- Install the new TPS, ensuring it is aligned correctly.
- Reconnect the electrical connector.