my Ford Explorer makes a whining noise when accelerating, what's wrong

Solution

1. Preparation

• Tools Required: Socket set, OBD-II scanner, stethoscope (or mechanic's ear).
• Safety Warnings: Ensure the vehicle is on a level surface and the parking brake is engaged.

2. Inspect and Replace Serpentine Belt

1. Remove the Serpentine Belt:
   • Use a socket wrench to rotate the tensioner pulley and relieve tension on the belt.
   • Carefully slide the belt off the pulleys.
2. Inspect the Belt:
   • Check for cracks, fraying, or signs of wear.
   • If damaged, proceed to replace it.
3. Install New Serpentine Belt:
   • Route the new belt over the pulleys according to the belt routing diagram (usually found on a sticker in the engine bay).
   • Rotate the tensioner and slip the belt back onto the tensioner pulley.

3. Check and Replace Transmission Fluid (if needed)

1. Check Fluid Level:
   • With the engine running, remove the transmission dipstick and wipe it clean.
   • Reinsert and remove the dipstick again to check the fluid level.
2. Add or Replace Fluid:
   • If low, add the correct type of transmission fluid (check owner’s manual for specifications).
   • If burnt or contaminated, drain and replace with fresh fluid.

4. Inspect and Replace Power Steering Fluid (if needed)

1. Check Fluid Level:
   • Locate the power steering reservoir and check the fluid level.
2. Replace Fluid:
   • If low, add the specified type of power steering fluid.
   • If discolored or dirty, flush the system and refill with new fluid.