why does my Ford Explorer Fifth Generation (2011-2019) make a whining noise when accelerating?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

572 words

Problem Statement

Learn how to diagnose and fix whining noise during acceleration in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostics, and solutions.

Affected Component

Transmission

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 inspecting the radiator or any hot components.

Symptoms

•Whining noise increases with acceleration
•Noise may vary with engine RPM
•Possible vibration felt through the vehicle
•Decreased power or responsiveness during acceleration
•Transmission slipping or harsh shifting (if applicable)

Diagnostic Steps

1
Inspect the serpentine belt for wear or damage.
2
Check the transmission fluid level and condition.
3
Listen for the noise while stationary in neutral to determine if it's engine-related or drivetrain-related.
4
Examine the power steering fluid level and check for leaks.
5
Inspect the differential fluid level and condition (if applicable).
6
Test the alternator and other accessories for unusual noise.

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

•Socket set
•Belt tensioner tool
•Transmission fluid pump
•Fluid catch pan
•Funnel

Parts Required

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

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Diagnostic Steps

1
Inspect the serpentine belt for wear or damage.
2
Check the transmission fluid level and condition.
3
Listen for the noise while stationary in neutral to determine if it's engine-related or drivetrain-related.
4
Examine the power steering fluid level and check for leaks.
5
Inspect the differential fluid level and condition (if applicable).
6
Test the alternator and other accessories for unusual noise.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is cool.
Disconnect the battery to avoid electrical shorts while working.

2. Inspect and Replace Serpentine Belt

Tools Required: Socket set, belt tensioner tool
Locate the serpentine belt routing diagram under the hood.
Use the belt tensioner tool to relieve tension and remove the serpentine belt.
Inspect the belt for cracks, fraying, or glazing. Replace if damaged.
Install the new belt according to the routing diagram and ensure proper tension.

3. Check and Replace Transmission Fluid

Tools Required: Transmission fluid pump, socket set, fluid catch pan
Locate the transmission fluid dipstick and remove it to check the fluid level.
If low or discolored, drain the transmission fluid using a catch pan.
Replace with manufacturer-recommended transmission fluid, ensuring the correct fluid type and quantity.
Recheck the fluid level after replacing and run the engine to circulate fluid.

4. Inspect and Replace Power Steering Fluid

Tools Required: Fluid catch pan, funnel
Check the power steering fluid reservoir for the correct level.
If low, add manufacturer-recommended power steering fluid.
Check for leaks in hoses or connections; replace faulty components as necessary.

5. Inspect and Replace Differential Fluid (if applicable)

Tools Required: Socket set, fluid catch pan
Locate the differential fill plug and fluid level check plug.
If the fluid is low or dirty, drain the old fluid using a catch pan.
Replace with manufacturer-recommended differential fluid, ensuring proper level.