why is my Ford Explorer Fifth Generation (2011-2019) making a whirring sound when idling

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

517 words

Problem Statement

Learn how to diagnose and fix a whirring sound at idle in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

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 inspecting components to prevent burns.

Symptoms

•Whirring sound noticeable at idle
•Possible fluctuation in engine RPM
•Increased engine vibration
•No check engine light illuminated
•Sound changes with engine load or acceleration

Diagnostic Steps

1
Inspect the serpentine belt for wear or damage.
2
Check the power steering fluid level and condition.
3
Examine the alternator for bearing wear or noise.
4
Inspect the air conditioning compressor operation.
5
Use a stethoscope or a mechanic’s listening tool to isolate the sound source.
6
Check for any loose or damaged components in the engine bay.

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
•Serpentine belt tool
•Multimeter
•Funnel

Parts Required

•New serpentine belt
•Power steering fluid
•New alternator (if needed)
•New AC compressor (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the serpentine belt for wear or damage.
2
Check the power steering fluid level and condition.
3
Examine the alternator for bearing wear or noise.
4
Inspect the air conditioning compressor operation.
5
Use a stethoscope or a mechanic’s listening tool to isolate the sound source.
6
Check for any loose or damaged components in the engine bay.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface, and set the parking brake.
Disconnect the battery to prevent any electrical shorts.

2. Inspect and Replace Serpentine Belt

Sub-steps:
1. Locate the serpentine belt routing diagram (usually found under the hood).
2. Use a socket set to relieve tension on the belt tensioner and remove the belt.
3. Inspect the belt for cracks, fraying, or glazing; replace if damaged.
4. Install the new serpentine belt following the routing diagram.
Tools Required: Socket set, serpentine belt tool, new serpentine belt.

3. Check Power Steering Fluid

Sub-steps:
1. Locate the power steering reservoir.
2. Check the fluid level; add fluid if low, ensuring it meets manufacturer specifications.
3. If fluid is contaminated, consider flushing the power steering system.
Tools Required: Funnel, power steering fluid.

4. Inspect Alternator

Sub-steps:
1. Visually inspect the alternator for any signs of wear or loose connections.
2. Use a multimeter to test the output voltage; it should be between 13.5 to 14.5 volts when the engine is running.
3. If the alternator is faulty or noisy, replace it.
Tools Required: Multimeter, socket set, new alternator (if needed).

5. Examine Air Conditioning Compressor

Sub-steps:
1. Check the AC compressor for any signs of leakage or unusual noise.
2. Engage the AC system and listen for changes in the whirring sound.
3. If the compressor is faulty, replace it.
Tools Required: Socket set, new AC compressor (if needed).