why does my Ford Explorer lose acceleration when pressing the gas

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

533 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 acceleration loss in Ford Explorer. 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 negative battery terminal before working on electrical systems.
•Allow the engine to cool before servicing.

Symptoms

•Check engine light illuminated
•Engine sputtering or hesitation
•Unresponsive throttle when accelerating
•Reduced power during acceleration
•Poor fuel economy
•Unusual engine noises (e.g., knocking or pinging)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the throttle body for carbon buildup and proper operation.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
4
Inspect the air filter for clogs or restrictions that could affect airflow.
5
Examine ignition components like spark plugs and ignition coils for wear or failure.
6
Verify transmission functionality by checking fluid levels and condition.

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
•Socket set
•Fuel pressure gauge
•Multimeter
•Basic hand tools

Parts Required

•Fuel filter
•Spark plugs
•Throttle body cleaner

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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 throttle body for carbon buildup and proper operation.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
4
Inspect the air filter for clogs or restrictions that could affect airflow.
5
Examine ignition components like spark plugs and ignition coils for wear or failure.
6
Verify transmission functionality by checking fluid levels and condition.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, fuel pressure gauge, multimeter, basic hand tools.
Safety Warnings: Disconnect the negative battery terminal before working on electrical systems. Allow the engine to cool before servicing.

2. Clean the Throttle Body

Remove the air intake duct connected to the throttle body.
Use throttle body cleaner and a soft cloth to clean the throttle plate and housing.
Reinstall the air intake duct securely.

3. Replace Fuel Filter (if clogged)

Locate the fuel filter (usually along the fuel line).
Relieve fuel system pressure by removing the fuse for the fuel pump and starting the engine until it stalls.
Disconnect the fuel lines from the filter using appropriate wrenches.
Replace the old filter with a new one, ensuring correct orientation.
Reconnect the fuel lines and restore power to the fuel pump.

4. Inspect and Replace Spark Plugs

Remove the ignition coil or plug wires to access the spark plugs.
Use a spark plug socket to remove each spark plug.
Inspect plugs for wear, carbon buildup, or damage; replace with OEM or equivalent parts.
Reinstall the spark plugs with the correct torque specification (typically around 13-15 lb-ft).

5. Check and Refill Transmission Fluid

With the engine running, check the transmission dipstick for fluid level.
If low, add the recommended transmission fluid type (consult the owner’s manual).
If fluid is discolored or burnt, consider a transmission fluid change.