how to fix Ford F-150 13th Generation (2015-2020) differential whining noise

Ford F-150 13th Generation (2015-2020)

Error Codes

3-5 hours

Time

medium

Difficulty

medium

Severity

3 min read

581 words

Problem Statement

Learn how to diagnose and fix differential whining noise in Ford F-150 13th Generation (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Differential

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is securely supported on jack stands before working underneath.
•Allow the differential to cool down before handling any components if the vehicle was recently driven.

Symptoms

•Whining noise when accelerating or maintaining speed
•Noise increases with vehicle speed
•Vibration felt through the floor or steering wheel
•Fluid leaks around the differential housing
•Unusual wear on tires or uneven tire tread

Diagnostic Steps

1
Inspect differential fluid level and condition; check for contamination or metal shavings.
2
Listen for noise while driving in a straight line and during turns to determine if it is differential-related.
3
Perform a visual inspection of the differential for signs of leaks or damage.
4
Check the backlash and gear pattern using a dial indicator to see if they are within specifications.
5
Inspect the driveshaft and universal joints for wear or damage that could contribute to the 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
•Torque wrench
•Dial indicator
•Drain pan
•Funnel
•Bearing puller

Parts Required

•Differential gasket
•Differential fluid (75W-90 gear oil)
•Replacement bearings or gears (if needed)

Related Faults

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Diagnostic Steps

1
Inspect differential fluid level and condition; check for contamination or metal shavings.
2
Listen for noise while driving in a straight line and during turns to determine if it is differential-related.
3
Perform a visual inspection of the differential for signs of leaks or damage.
4
Check the backlash and gear pattern using a dial indicator to see if they are within specifications.
5
Inspect the driveshaft and universal joints for wear or damage that could contribute to the noise.

Solution

1. Preparation

Gather tools and parts required.
Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
Raise the vehicle using a jack and secure with jack stands.

2. Fluid Change

Tools Required: Socket set, drain pan, funnel, torque wrench.
Remove the differential cover by unscrewing the bolts and carefully prying it off.
Allow the old fluid to drain completely into the drain pan.
Inspect the magnet inside the differential cover for metal shavings and clean it.
Replace the old differential gasket with a new one.
Refill with the manufacturer's recommended differential fluid (typically 75W-90 gear oil).
Torque the differential cover bolts to the manufacturer's specifications (usually around 25-30 lb-ft).

3. Inspect and Adjust Gear Backlash

Tools Required: Dial indicator, torque wrench.
Use a dial indicator to measure the backlash between the ring and pinion gears.
If backlash is out of specification (usually 0.006-0.010 inches), adjust the differential by shimming the carrier.
Recheck the gear pattern to ensure proper engagement.

4. Replace Worn Components

If excessive wear is found on gears, bearings or seals, replace these components.
Tools Required: Bearing puller, socket set, torque wrench.
Disassemble the differential to replace bearings and gears as necessary.
Reassemble the differential carefully, ensuring all components are torqued to specifications.

5. Test Drive

Lower the vehicle and conduct a test drive to ensure the whining noise has been resolved.