why does my Ford Explorer's rear end make noise when driving

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

553 words

Problem Statement

Learn how to diagnose and fix rear end noise in 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

•Ensure the vehicle is securely lifted and supported before working underneath it.
•Allow the engine to cool before inspecting any components that may be hot.

Symptoms

•Grinding or whining noise from the rear while driving
•Clunking sounds during acceleration or deceleration
•Vibration felt in the vehicle when driving
•Unusual tire wear on the rear tires
•Difficulty turning or handling when cornering
•Check engine light illuminated (if applicable)

Diagnostic Steps

1
Inspect the rear differential fluid level and condition.
2
Perform a visual inspection of the rear suspension components for wear or damage.
3
Check for play in the rear wheel bearings by lifting the vehicle and spinning the wheels.
4
Examine the rear tires for uneven wear patterns.
5
Listen for noises while driving in a straight line and during turns to determine the source of the sound.
6
Scan for error codes using an OBD-II scanner (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

•Floor jack
•Jack stands
•Wheel chocks
•Socket set
•Torque wrench
•OBD-II scanner

Parts Required

•Differential fluid (75W-90 gear oil)
•Wheel bearings (if needed)
•Suspension components (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the rear differential fluid level and condition.
2
Perform a visual inspection of the rear suspension components for wear or damage.
3
Check for play in the rear wheel bearings by lifting the vehicle and spinning the wheels.
4
Examine the rear tires for uneven wear patterns.
5
Listen for noises while driving in a straight line and during turns to determine the source of the sound.
6
Scan for error codes using an OBD-II scanner (if applicable).

Solution

1. Preparation

Tools Required: Floor jack, jack stands, wheel chocks, socket set, torque wrench, OBD-II scanner.
Ensure the vehicle is parked on a flat surface and engage the parking brake. Disconnect the battery if necessary.

2. Fluid Inspection and Replacement

Sub-steps:
1. Remove the differential cover using a socket set.
2. Drain the old differential fluid into a clean container.
3. Inspect the fluid for metal shavings or debris indicating wear.
4. Clean the differential cover and gasket surface.
5. Refill with the manufacturer-recommended differential fluid (typically 75W-90 gear oil).
6. Reinstall the differential cover and torque bolts to the manufacturer’s specifications.

3. Wheel Bearing Inspection and Replacement

Sub-steps:
1. Lift the vehicle and secure it with jack stands.
2. Remove the rear wheels using a socket set.
3. Inspect the rear wheel bearings for play by wiggling the hub.
4. If play is detected, remove the brake assembly and hub.
5. Replace the wheel bearings with new ones, ensuring to pack them with grease.
6. Reassemble the brake assembly and reinstall the wheels.

4. Suspension Component Inspection and Replacement

Sub-steps:
1. Visually inspect the rear suspension components (shocks, springs, control arms) for damage or wear.
2. Replace any worn or damaged parts using appropriate tools.
3. Torque all suspension bolts to the manufacturer's specifications.