what causes my Ford Explorer to have a loss of acceleration power

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

505 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 acceleration power in Ford Explorer. Step-by-step guide with diagnostic procedures 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
•Unresponsive throttle when accelerating
•Engine stalling during acceleration
•Rough idling or hesitation
•Poor fuel economy
•Unusual engine noises (e.g., knocking, sputtering)

Diagnostic Steps

1
Scan the vehicle’s onboard computer using an OBD-II scanner to check for error codes.
2
Inspect the air intake system for blockages or leaks.
3
Check the fuel pressure using a fuel pressure gauge to ensure it meets specifications.
4
Examine the throttle body for dirt or carbon buildup.
5
Test the ignition system components, including spark plugs and ignition coils, for proper function.
6
Inspect the transmission fluid level 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
•Fuel pressure gauge
•Throttle body cleaner
•Multimeter
•Socket set
•Torque wrench
•Screwdrivers

Parts Required

•Air filter
•Fuel filter
•Spark plugs
•Ignition coils (if needed)
•Gaskets for throttle body

Related Faults

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Diagnostic Steps

1
Scan the vehicle’s onboard computer using an OBD-II scanner to check for error codes.
2
Inspect the air intake system for blockages or leaks.
3
Check the fuel pressure using a fuel pressure gauge to ensure it meets specifications.
4
Examine the throttle body for dirt or carbon buildup.
5
Test the ignition system components, including spark plugs and ignition coils, for proper function.
6
Inspect the transmission fluid level and condition.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface with the engine off.
Wear safety gloves and goggles.

2. Address Error Codes

Connect the OBD-II scanner and note any fault codes.
Clear the codes and perform a test drive to see if they return.

3. Clean Air Intake System

Remove the air intake duct and inspect the air filter.
- Sub-steps:
  1. Replace a dirty air filter.
  2. Clean the air intake duct with appropriate cleaner.
  3. Reinstall the duct securely.
If applicable, clean the Mass Air Flow (MAF) sensor with MAF cleaner.

4. Fuel System Check

Attach the fuel pressure gauge to the fuel rail.
- Sub-steps:
  1. Turn the ignition to the "ON" position (without starting) and check the pressure.
  2. Compare the reading with manufacturer specifications.
  3. Replace the fuel filter if pressure is low or inconsistent.
  4. Inspect fuel injectors for proper operation; clean or replace if necessary.

5. Throttle Body Cleaning

Remove the throttle body from the intake manifold.
- Sub-steps:
  1. Clean the throttle body using throttle body cleaner and a soft brush.
  2. Inspect the throttle position sensor (TPS) and replace if faulty.
  3. Reinstall the throttle body and reconnect any electrical connectors.

6. Ignition System Inspection

Remove spark plugs and inspect for wear or fouling.
- Sub-steps:
  1. Replace spark plugs with OEM specifications if necessary.
  2. Check ignition coils for proper resistance using a multimeter; replace any faulty coils.

7. Transmission Fluid Check

Check the transmission fluid level and condition.
- Sub-steps:
  1. Add fluid if low, and replace it if it’s burnt or contaminated.
  2. If needed, perform a full transmission fluid change.

Tools Required:

OBD-II scanner
Fuel pressure gauge
Throttle body cleaner
Multimeter
Socket set
Torque wrench
Screwdrivers

Parts Required:

Air filter
Fuel filter
Spark plugs
Ignition coils (if needed)
Gaskets for throttle body

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool before opening any components.