my Ford Explorer makes a whining noise when driving what could it be

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Wear safety glasses and gloves.

2. Inspect and Top Off Power Steering Fluid

• Locate the power steering reservoir under the hood.
• Check the fluid level against the dipstick or markings on the reservoir.
• If low, add the appropriate type of power steering fluid according to the owner’s manual.

3. Examine the Serpentine Belt

• Locate the serpentine belt and inspect it for cracks, fraying, or wear.
• If damaged, use a socket set to relieve tension on the tensioner and remove the belt.
• Install a new serpentine belt by routing it according to the belt routing diagram.

4. Check and Replace Wheel Bearings

• Lift the front of the vehicle and secure it on jack stands.
• Spin the wheels by hand; listen for any grinding or roughness.
• If noise is present, disassemble the hub assembly using a socket set and replace the wheel bearings.

5. Inspect Transmission Fluid

• Locate the transmission dipstick and remove it to check fluid level.
• If low or dark, drain the transmission fluid and replace it with the manufacturer-recommended fluid.
• Use a funnel to refill through the dipstick tube.

6. Evaluate Differential and Drive Shafts

• Inspect the differential for leaks and listen for noise while rotating the wheels.
• Check the drive shafts and CV joints for any visible damage or excessive play.
• If damaged, replace the affected components.