why does my Ford Explorer Fifth Generation (2011-2019) have poor acceleration

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

615 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 poor acceleration issues in the 2011-2019 Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and solutions.

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 inspecting or replacing components.

Symptoms

•Check engine light illuminated
•Sluggish acceleration when pressing the gas pedal
•Engine stalling during acceleration
•Unusual engine noises (e.g., knocking, pinging)
•Increased fuel consumption
•Rough idling or hesitation when accelerating

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored diagnostics.
2
Inspect the air intake system for blockages or leaks in the air filter and intake hoses.
3
Check the fuel system, including fuel pressure and condition of the fuel filter.
4
Test the throttle position sensor (TPS) for proper voltage output and functionality.
5
Inspect the exhaust system for blockages or damage, particularly the catalytic converter.
6
Perform a visual inspection of ignition components (spark plugs, wires, coils) for wear or damage.

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
•Screwdriver set
•Fuel pressure gauge
•Line removal tool
•Multimeter
•Spark plug socket
•Torque wrench
•Wrench set

Parts Required

•Air filter
•Fuel filter
•Throttle position sensor (if necessary)
•Spark plugs
•Catalytic converter (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored diagnostics.
2
Inspect the air intake system for blockages or leaks in the air filter and intake hoses.
3
Check the fuel system, including fuel pressure and condition of the fuel filter.
4
Test the throttle position sensor (TPS) for proper voltage output and functionality.
5
Inspect the exhaust system for blockages or damage, particularly the catalytic converter.
6
Perform a visual inspection of ignition components (spark plugs, wires, coils) for wear or damage.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety during repairs.

2. Replace Air Filter

Remove the airbox cover by unscrewing the retaining clips or screws.
Take out the old air filter and inspect the housing for debris.
Install a new air filter, ensuring it fits snugly, and replace the airbox cover.
Tools Required: Screwdriver set.

3. Fuel System Inspection

3.1. Check Fuel Pressure

Locate the fuel pressure test port on the fuel rail.
Attach a fuel pressure gauge and start the engine; observe the pressure reading.
If the pressure is below specifications, proceed to replace the fuel filter or fuel pump.
Tools Required: Fuel pressure gauge.

3.2. Replace Fuel Filter (if necessary)

Relieve fuel pressure by removing the fuel pump fuse and running the engine until it stalls.
Disconnect the fuel lines from the filter using a line removal tool.
Install the new filter, ensuring proper flow direction, and reconnect the fuel lines.
Tools Required: Line removal tool.

4. Throttle Position Sensor Testing

Locate the TPS on the throttle body.
Disconnect the electrical connector and use a multimeter to check the resistance or voltage output.
If readings are out of spec, replace the TPS.
Tools Required: Multimeter.

5. Inspect and Replace Spark Plugs

Remove the ignition coils by unscrewing them.
Take out the spark plugs using a spark plug socket and inspect their condition.
Replace with new spark plugs, ensuring correct gap and torque specifications (typically 13-15 lb-ft).
Tools Required: Spark plug socket, torque wrench.

6. Exhaust Inspection

Visually inspect the exhaust for any visible damage or blockages.
If the catalytic converter is found to be clogged, replace it following manufacturer specifications.
Tools Required: Wrench set.