why is my Ford Explorer making a whirring noise when I accelerate?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

584 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

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool before inspecting or working in the engine bay.

Symptoms

•Whirring noise becomes louder with acceleration
•Vibration felt through the steering wheel or floorboard
•Decreased power during acceleration
•Unusual engine RPM fluctuations
•Possible check engine light illuminated

Diagnostic Steps

1
Inspect the engine bay for any loose components or foreign objects that could cause noise.
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs).
3
Check the fluid levels in the transmission and differential for proper levels and condition.
4
Test drive the vehicle to determine if the noise is consistent at specific speeds or RPM ranges.
5
Listen for the noise with the hood open to pinpoint the source (engine vs. drivetrain).
6
Inspect the serpentine belt for wear, cracks, or misalignment.

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
•Socket set
•Wrench set
•Drain pan
•Torque wrench

Parts Required

•New serpentine belt
•Transmission fluid (as specified in owner's manual)
•Differential fluid (as specified in owner's manual)

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Diagnostic Steps

1
Inspect the engine bay for any loose components or foreign objects that could cause noise.
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs).
3
Check the fluid levels in the transmission and differential for proper levels and condition.
4
Test drive the vehicle to determine if the noise is consistent at specific speeds or RPM ranges.
5
Listen for the noise with the hood open to pinpoint the source (engine vs. drivetrain).
6
Inspect the serpentine belt for wear, cracks, or misalignment.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Inspect and Replace the Serpentine Belt

Remove the Engine Cover (if applicable)
- Use a socket set to remove bolts securing the cover.
- Carefully lift and set aside.
Inspect the Serpentine Belt
- Check for signs of wear, cracks, or fraying.
- If damaged, proceed to replace.
Remove the Old Serpentine Belt
- Locate the tensioner pulley and use a wrench to relieve tension.
- Slide the belt off the pulleys.
Install the New Serpentine Belt
- Refer to the belt routing diagram (usually found on a sticker in the engine bay).
- Install the belt by following the routing, ensuring it is seated properly on all pulleys.
- Reapply tension using the tensioner pulley.

3. Inspect and Replace Transmission Fluid

Check Transmission Fluid Level
- With the engine running and the transmission in park, check the dipstick for fluid level and condition.
Change Transmission Fluid (if necessary)
- Drain the old fluid using a drain pan.
- Replace the filter (if applicable) and reinstall the pan with new gasket and torque to manufacturer's specifications.
- Refill with the appropriate type and amount of transmission fluid.

4. Inspect and Repair Differential Fluid

Check Differential Fluid Level
- Remove the fill plug and check the fluid level.
- If low, drain and replace with the correct type of gear oil.
Replace Differential Fluid
- Drain the old fluid completely and replace the fill plug.
- Refill with new differential fluid until it reaches the fill hole.