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

556 words

Problem Statement

Learn how to diagnose and fix delay in acceleration issues in Ford Explorer Fifth Generation (2011-2019). 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 the throttle body or checking the transmission fluid.

Symptoms

•Delay in throttle response when pressing the accelerator
•Engine revs without corresponding vehicle movement
•Erratic or rough shifting during acceleration
•Check engine light illuminated
•Reduced fuel economy
•Engine stalling or hesitation during acceleration

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 or obstructions affecting airflow.
3
Examine the mass air flow (MAF) sensor for cleanliness and proper function.
4
Check the transmission fluid level and condition to ensure it is within specifications.
5
Test the accelerator pedal position sensor for proper voltage output using a multimeter.
6
Inspect the fuel system for pressure and flow issues, including the fuel filter and pump.

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
•Throttle body cleaner
•MAF sensor cleaner
•Multimeter
•Socket set
•Screwdriver
•Soft brush

Parts Required

•Accelerator pedal position sensor (if replacement is necessary)
•Transmission fluid (if needed)

Related Faults

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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 or obstructions affecting airflow.
3
Examine the mass air flow (MAF) sensor for cleanliness and proper function.
4
Check the transmission fluid level and condition to ensure it is within specifications.
5
Test the accelerator pedal position sensor for proper voltage output using a multimeter.
6
Inspect the fuel system for pressure and flow issues, including the fuel filter and pump.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the battery to ensure safety during repairs.

2. Clean Throttle Body

Tools Required: Throttle body cleaner, soft brush, rags
Remove the intake duct connected to the throttle body.
Spray throttle body cleaner into the throttle body and scrub gently with a soft brush.
Wipe clean with rags and ensure all cleaner residue is removed before reassembling.

3. Inspect and Clean MAF Sensor

Tools Required: MAF sensor cleaner, screwdriver
Locate the MAF sensor, usually found in the air intake duct.
Carefully remove the MAF sensor from the housing.
Spray MAF sensor cleaner onto the sensor elements (do not touch them) and let dry.
Reinstall the MAF sensor securely.

4. Check and Replace Accelerator Pedal Position Sensor

Tools Required: Multimeter, screwdriver
Locate the accelerator pedal position sensor mounted on the pedal assembly.
Disconnect the wiring harness and use a multimeter to test the voltage output.
If readings are outside the manufacturer's specifications, replace the sensor with a new one.

5. Transmission Fluid Inspection

Tools Required: Socket set, fluid pump
Check the transmission fluid level using the dipstick (if equipped).
If the fluid is low, add the manufacturer-recommended transmission fluid.
If the fluid appears burnt or contaminated, consider a transmission fluid change.