why does my Ford Explorer have a loud humming noise while driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

494 words

Problem Statement

Learn how to diagnose and fix a loud humming noise in your Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting the drivetrain components.

Symptoms

•Loud humming noise while driving, especially at higher speeds
•Vibration felt through the steering wheel or floor
•Noise changes with acceleration or deceleration
•Possible pulling to one side while driving
•Deteriorating handling or steering response

Diagnostic Steps

1
Inspect the tires for uneven wear, damage, or improper inflation.
2
Check the wheel bearings for play by jacking up the vehicle and wiggling the wheel.
3
Listen for the noise while driving in a straight line and while turning to determine if it changes direction.
4
Inspect the drivetrain components, including the differential and driveshaft for any signs of wear or damage.
5
Use a stethoscope or mechanic's stethoscope to pinpoint the noise source while stationary.

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
•Tire pressure gauge
•Socket set
•Bearing puller
•Torque wrench
•Mechanic's stethoscope

Parts Required

•Replacement tires (if worn)
•Wheel bearings (if defective)
•Differential fluid (if low or contaminated)
•Universal joints (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the tires for uneven wear, damage, or improper inflation.
2
Check the wheel bearings for play by jacking up the vehicle and wiggling the wheel.
3
Listen for the noise while driving in a straight line and while turning to determine if it changes direction.
4
Inspect the drivetrain components, including the differential and driveshaft for any signs of wear or damage.
5
Use a stethoscope or mechanic's stethoscope to pinpoint the noise source while stationary.

Solution

1. Tire Inspection and Replacement

Inspect Tires: Examine tread depth and wear patterns. Look for bulges or punctures.
Replace Tires: If the tires are worn unevenly or damaged, replace them with new tires of the same size and specifications.
Balance and Align: Ensure tires are balanced and the vehicle is aligned after replacement.

2. Wheel Bearing Repair

Remove Wheel: Jack up the vehicle and safely support it. Remove the wheel using a socket set.
Inspect Bearing: Check for any noise or roughness when rotating the hub. If defective, proceed to replace.
Replace Bearing: Use a bearing puller to remove the old bearing and press in the new bearing. Torque to manufacturer specifications (typically around 70-90 ft-lbs).

3. Drivetrain Inspection and Repair

Check Differential Fluid: Remove the differential cover and inspect fluid level and condition. Replace if contaminated or low.
Inspect Driveshaft: Check for any signs of wear or damage. Replace universal joints if found defective.
Repair or Replace Components: If any parts are damaged or worn, replace them as necessary, ensuring all fasteners are torqued to specs.