why does my Ford Explorer Fifth Generation (2011-2019) lose power while driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

624 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 loss of power while driving 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 performing inspections or repairs.

Symptoms

•Sudden loss of acceleration
•Engine stalling or hesitation during acceleration
•Check engine light illuminated
•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 identify potential fault codes.
2
Inspect the fuel system for pressure and leaks, checking fuel pump operation and fuel filter condition.
3
Check the air intake system for blockages or leaks, including the air filter and intake hoses.
4
Inspect the ignition system components, including spark plugs, ignition coils, and wiring.
5
Evaluate the throttle position sensor (TPS) for proper function using a multimeter.
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
•Multimeter
•Fuel pressure gauge
•Socket set
•Torque wrench
•Basic hand tools

Parts Required

•Fuel filter
•Fuel pump (if defective)
•Air filter
•Spark plugs
•Ignition coils (if defective)
•Throttle position sensor (if defective)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential fault codes.
2
Inspect the fuel system for pressure and leaks, checking fuel pump operation and fuel filter condition.
3
Check the air intake system for blockages or leaks, including the air filter and intake hoses.
4
Inspect the ignition system components, including spark plugs, ignition coils, and wiring.
5
Evaluate the throttle position sensor (TPS) for proper function using a multimeter.
6
Check for vacuum leaks in hoses and intake manifold.

Solution

1. Preparation

Gather tools and parts: OBD-II scanner, multimeter, socket set, torque wrench, basic hand tools.
Park the vehicle on a flat surface, engage the parking brake, and disconnect the battery.

2. Fuel System Inspection

Sub-step 1: Remove the fuel pump relay and test the fuel pump operation by turning the ignition to the "ON" position.
Sub-step 2: Use a fuel pressure gauge to measure the fuel pressure at the fuel rail. Refer to the manufacturer specifications for acceptable pressure values.
Sub-step 3: Replace the fuel filter if clogged, and if the fuel pump is malfunctioning, replace it.

3. Air Intake System Check

Sub-step 1: Remove the air filter and inspect it for dirt or clogging; replace if necessary.
Sub-step 2: Inspect the intake hoses for cracks or leaks and replace any damaged hoses.
Sub-step 3: Clean the throttle body using throttle body cleaner, ensuring proper operation of the throttle plate.

4. Ignition System Maintenance

Sub-step 1: Remove the spark plugs for inspection; replace if worn or fouled.
Sub-step 2: Test ignition coils using a multimeter for resistance; replace any faulty coils.
Sub-step 3: Check spark plug wiring for continuity and replace damaged wires.

5. Throttle Position Sensor (TPS) Evaluation

Sub-step 1: Disconnect the TPS connector and use a multimeter to test the resistance across the terminals.
Sub-step 2: If the TPS is out of specification, replace it and adjust according to manufacturer specifications.

6. Vacuum Leak Inspection

Sub-step 1: Visually inspect all vacuum hoses and connections for wear or disconnection.
Sub-step 2: Use a smoke machine to detect vacuum leaks in the intake manifold.
Sub-step 3: Replace any defective hoses or seal leaks found in the intake manifold.