why does my Ford Explorer make a whirring noise when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

535 words

Problem Statement

Learn how to diagnose and fix whirring noise during acceleration in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Drivetrain

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 performing any service.

Symptoms

•Whirring noise increases with acceleration
•Potential vibration felt through the floor or steering wheel
•Noise may vary based on speed or load
•Possible decrease in engine performance
•Check engine light may illuminate (if applicable)

Diagnostic Steps

1
Inspect the serpentine belt for wear or damage.
2
Check fluid levels in the transmission and differential.
3
Use an OBD-II scanner to check for any error codes related to the drivetrain or engine.
4
Inspect the exhaust system for any leaks or loose components.
5
Listen for the noise while stationary, in gear, to isolate the source.
6
Elevate the vehicle and inspect the condition of the wheel bearings and CV joints.

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 wrench
•Belt tensioner tool (if necessary)
•Funnel
•Transmission fluid
•Jack and jack stands
•Socket set
•Bearing puller
•OBD-II scanner

Parts Required

•Serpentine belt
•Transmission fluid
•Wheel bearings (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the serpentine belt for wear or damage.
2
Check fluid levels in the transmission and differential.
3
Use an OBD-II scanner to check for any error codes related to the drivetrain or engine.
4
Inspect the exhaust system for any leaks or loose components.
5
Listen for the noise while stationary, in gear, to isolate the source.
6
Elevate the vehicle and inspect the condition of the wheel bearings and CV joints.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery 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 tensioner pulley.
3. Remove the old serpentine belt from the pulleys.
4. Inspect the pulleys for damage or wear.
5. Install the new serpentine belt according to the routing diagram.
6. Reapply tension to the tensioner pulley and ensure the belt is seated properly.
Tools Required: Socket wrench, belt tensioner tool (if necessary)

3. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Check the fluid level and condition; it should be red and clear.
3. If low, add the recommended transmission fluid specific to the Ford Explorer.
4. If the fluid is dark or has a burnt smell, consider a transmission fluid change.
Tools Required: Funnel, transmission fluid

4. Inspect and Replace Wheel Bearings (if needed)

Sub-steps:
1. Raise the vehicle and securely support it with jack stands.
2. Remove the wheel to access the brake assembly and hub.
3. Inspect wheel bearings for play or roughness by spinning the hub.
4. If defective, remove the hub and press out the old bearings.
5. Install new bearings and reassemble the hub and wheel.
Tools Required: Jack and jack stands, socket set, bearing puller