my Ford Explorer Fifth Generation (2011-2019) has a whining noise when accelerating, what's wrong?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

568 words

Problem Statement

Learn how to diagnose and fix whining noise during acceleration in Ford Explorer (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 any fluid reservoirs

Symptoms

•Whining noise increases with acceleration
•Possible loss of power during acceleration
•Vibration felt through the accelerator pedal
•Check engine light may be illuminated
•Unusual fluid leaks under the vehicle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the serpentine belt for wear, cracks, or damage
3
Check the power steering fluid level and condition
4
Listen for the source of the whining noise by revving the engine while stationary
5
Inspect the transmission fluid level and condition if the noise changes during gear shifts
6
Examine the differential fluid level and condition if applicable

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
•Torque wrench
•Fluid pump (for differential fluid)

Parts Required

•Serpentine belt (if needed)
•Power steering fluid
•Transmission fluid
•Differential fluid

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Inspect the serpentine belt for wear, cracks, or damage
3
Check the power steering fluid level and condition
4
Listen for the source of the whining noise by revving the engine while stationary
5
Inspect the transmission fluid level and condition if the noise changes during gear shifts
6
Examine the differential fluid level and condition if applicable

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Serpentine Belt

Sub-steps:
1. Locate the serpentine belt routing diagram (usually found on a sticker under the hood).
2. Use a socket wrench to relieve tension from the serpentine belt tensioner.
3. Remove the serpentine belt from the pulleys.
4. Inspect the belt for any signs of wear, fraying, or glazing.
5. If damaged, replace it with a new belt of the specified size and type.
6. Reinstall the new belt following the routing diagram and ensure proper tension.

3. Check and Refill Power Steering Fluid

Sub-steps:
1. Locate the power steering fluid reservoir.
2. Remove the cap and check fluid level.
3. If low, add the manufacturer-recommended power steering fluid until the proper level is reached.
4. Replace the cap securely.

4. Inspect and Refill Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick (if applicable) or access the transmission pan.
2. Check the fluid level and condition. If the fluid is dark or has a burnt smell, it may need to be replaced.
3. If low, add the correct transmission fluid type until it reaches the appropriate level.

5. Inspect and Refill Differential Fluid

Sub-steps:
1. Locate the differential housing, usually found at the rear axle.
2. Check the fluid level via the fill plug.
3. If low, remove the fill plug and add the appropriate differential fluid until it begins to ooze out of the fill hole.
4. Replace the fill plug and ensure it is tightened to the specified torque.