my Ford Explorer makes a whining noise when I accelerate what could be wrong

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

555 words

Problem Statement

Learn how to diagnose and fix a whining 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 systems.
•Allow the engine to cool before inspecting components.

Symptoms

•Whining noise increases with acceleration
•Possible loss of power during acceleration
•Transmission slipping or difficulty shifting
•Unusual vibrations felt in the cabin
•Fluid leaks under the vehicle

Diagnostic Steps

1
Inspect the transmission fluid level and condition.
2
Check for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
3
Listen for the whining noise when the engine is idling to determine if it's engine-related or drivetrain-related.
4
Inspect the serpentine belt for wear or damage.
5
Examine the alternator and power steering pump for excessive wear or malfunction.
6
Check for worn or damaged drive axles.

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
•Transmission funnel
•Fluid catch pan
•Belt tensioner tool
•Multimeter
•Jack and jack stands

Parts Required

•Transmission fluid
•Serpentine belt
•Alternator (if faulty)
•Power steering pump (if faulty)
•Drive axle (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the transmission fluid level and condition.
2
Check for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
3
Listen for the whining noise when the engine is idling to determine if it's engine-related or drivetrain-related.
4
Inspect the serpentine belt for wear or damage.
5
Examine the alternator and power steering pump for excessive wear or malfunction.
6
Check for worn or damaged drive axles.

Solution

1. Preparation

Gather tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the battery to avoid electrical shorts.

2. Check and Replace Transmission Fluid

Tools Required: Socket set, transmission funnel, fluid catch pan
Sub-steps:
1. Locate the transmission fluid dipstick and remove it.
2. Check fluid level; if low, add the manufacturer-recommended fluid.
3. If fluid is dark or has a burnt smell, consider a transmission fluid change.
4. Drain the old fluid using a catch pan, then refill with new fluid per manufacturer specifications.

3. Inspect and Replace Serpentine Belt

Tools Required: Belt tensioner tool
Sub-steps:
1. Locate the serpentine belt routing diagram, usually found on a sticker in the engine bay.
2. Use the tensioner tool to relieve tension on the belt.
3. Remove the old belt and inspect pulleys for damage.
4. Install a new serpentine belt, ensuring proper routing and tension.

4. Examine and Replace Alternator or Power Steering Pump (if necessary)

Tools Required: Socket set, multimeter
Sub-steps:
1. Disconnect any electrical connectors from the alternator or power steering pump.
2. Remove mounting bolts and detach the component from the engine.
3. Test the alternator output with a multimeter; it should be between 13.8 to 14.4 volts.
4. If faulty, install a new alternator or power steering pump as needed.

5. Inspect Drive Axles

Tools Required: Jack and jack stands, socket set
Sub-steps:
1. Lift the vehicle using a jack and secure it with jack stands.
2. Inspect the drive axles for any visible damage or wear.
3. If damaged, replace the affected axle.