why does my Ford F-150 14th Generation (2021-2024) squeal when I start it cold

Solution

1. Preparation

• Tools Required: Socket set, belt tension gauge, stethoscope, flashlight.
• Ensure the engine is off and cooled down. Disconnect the battery to prevent any accidental starting.

2. Inspect and Replace the Serpentine Belt

• Sub-steps:
  1. Locate the serpentine belt routing diagram (usually found on a sticker in the engine bay).
  2. Using a socket wrench, relieve tension on the belt tensioner and remove the serpentine belt.
  3. Inspect the belt for cracks, fraying, or glazing. Replace if damaged.
  4. Install the new serpentine belt according to the routing diagram, ensuring it sits properly on all pulleys.

3. Check and Replace the Tensioner (if necessary)

• Sub-steps:
  1. If the tensioner appears to be faulty (does not maintain tension), remove the tensioner by unscrewing the mounting bolts.
  2. Install the new tensioner in the reverse order of removal and torque bolts to the manufacturer’s specifications (usually around 20-25 ft-lbs).

4. Inspect and Lubricate Pulleys

• Sub-steps:
  1. Check each pulley for smooth rotation. If any pulley is stiff, it may need lubrication or replacement.
  2. Apply a suitable lubricant to the bearings of the pulleys if they are not damaged. If they are damaged, replace them.