why does my Ford Explorer Fifth Generation (2011-2019) have a delay in acceleration?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

530 words

Problem Statement

Learn how to diagnose and fix delay in acceleration for Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms 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 opening any components.

Symptoms

•Delay in throttle response when pressing the accelerator
•Engine hesitates or stutters during acceleration
•Check engine light illuminated
•Poor fuel economy
•Transmission slipping or harsh shifting
•Unusual engine noises during acceleration

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the throttle body for carbon buildup and ensure it operates smoothly.
3
Check the transmission fluid level and condition; look for signs of contamination or burnt odor.
4
Test the accelerator pedal position sensor with a multimeter to confirm proper voltage readings.
5
Evaluate the fuel delivery system, including checking the fuel pump pressure and inspecting the fuel filter.
6
Inspect for vacuum leaks in the intake manifold and associated hoses.

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
•Throttle body cleaner
•Socket set
•Transmission fluid pump

Parts Required

•Accelerator pedal position sensor
•Transmission fluid

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the throttle body for carbon buildup and ensure it operates smoothly.
3
Check the transmission fluid level and condition; look for signs of contamination or burnt odor.
4
Test the accelerator pedal position sensor with a multimeter to confirm proper voltage readings.
5
Evaluate the fuel delivery system, including checking the fuel pump pressure and inspecting the fuel filter.
6
Inspect for vacuum leaks in the intake manifold and associated hoses.

Solution

1. Preparation

Gather tools and parts for the repair.
Disconnect the negative battery terminal to prevent electrical shorts.
Allow the engine to cool before beginning work.

2. Throttle Body Cleaning

Tools Required: Throttle body cleaner, clean cloths, screwdriver set.
Remove the air intake duct connected to the throttle body.
Spray throttle body cleaner onto the throttle plate and use a clean cloth to wipe away carbon deposits.
Ensure the throttle plate opens and closes freely before reassembly.
Reconnect the air intake duct securely.

3. Inspect and Replace the Accelerator Pedal Position Sensor

Tools Required: Multimeter, socket set, replacement accelerator pedal position sensor.
Disconnect the electrical connector from the sensor.
Remove the screws securing the sensor to the accelerator pedal assembly.
Install the new sensor and reconnect the electrical connector.
Test the new sensor with a multimeter to ensure it provides the correct voltage output.

4. Transmission Fluid Check and Change

Tools Required: Transmission fluid pump, socket set, new transmission fluid (as specified in the owner’s manual).
Locate the transmission dipstick and check the fluid level.
If low, add the appropriate type of transmission fluid.
If fluid is burnt or contaminated, drain the old fluid and replace it with new fluid using a transmission fluid pump.