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

3 min read

593 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 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 any components.

Symptoms

•Check engine light illuminated
•Sluggish response during acceleration
•Engine stalling or hesitation
•Poor fuel economy
•Unusual engine noises (knocking or sputtering)
•Increased exhaust emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the air intake system for blockages or leaks.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure.
4
Examine the throttle body for carbon buildup or malfunction.
5
Test the ignition system components (spark plugs, ignition coils) for proper functioning.
6
Inspect the exhaust system for restrictions or leaks, such as a clogged catalytic converter.

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
•Throttle body cleaner
•Soft cloth
•Torque wrench

Parts Required

•Air filter
•Spark plugs
•Fuel filter (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Inspect the air intake system for blockages or leaks.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump is delivering adequate pressure.
4
Examine the throttle body for carbon buildup or malfunction.
5
Test the ignition system components (spark plugs, ignition coils) for proper functioning.
6
Inspect the exhaust system for restrictions or leaks, such as a clogged catalytic converter.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Addressing Engine Codes

Sub-steps:
- Reconnect the battery and start the engine.
- Use the OBD-II scanner to clear any stored fault codes.
- Test drive the vehicle to see if the check engine light returns.

3. Clean or Replace Air Filter

Sub-steps:
- Locate the air filter housing and open it.
- Remove the air filter and inspect for dirt or damage.
- If dirty, clean the filter if washable or replace it with a new one.
Tools Required: Screwdriver, new air filter.

4. Inspect and Clean Throttle Body

Sub-steps:
- Remove the intake duct to access the throttle body.
- Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
- Reassemble the intake duct securely.
Tools Required: Throttle body cleaner, soft cloth.

5. Check and Replace Spark Plugs/Ignition Coils

Sub-steps:
- Remove the engine cover, if applicable.
- Disconnect the ignition coil connectors and remove the coils.
- Check spark plugs for wear and replace if necessary.
- Reinstall ignition coils and connectors.
Tools Required: Socket set, torque wrench, spark plugs (if replacement needed).
Torque Values: Follow manufacturer specifications for spark plug torque.

6. Fuel System Inspection

Sub-steps:
- Connect a fuel pressure gauge to the fuel rail.
- Start the engine and check the fuel pressure reading against manufacturer specifications.
- If pressure is low, inspect the fuel filter and replace if clogged; check the fuel pump for proper operation.
Tools Required: Fuel pressure gauge, replacement fuel filter (if needed).