* Worn or damaged ball joints: The ball joints connect the steering knuckles to the control arms, and they allow the wheels to pivot when you turn the steering wheel. If the ball joints are worn or damaged, they can cause a squeaking noise when the suspension moves up and down.
* Loose or damaged tie rod ends: The tie rod ends connect the steering rack to the steering knuckles, and they help to turn the wheels when you move the steering wheel. If the tie rod ends are loose or damaged, they can also cause a squeaking noise when the suspension moves up and down.
* Worn or damaged control arm bushings: The control arm bushings help to insulate the control arms from the frame of the vehicle, and they also help to reduce noise and vibration. If the control arm bushings are worn or damaged, they can cause a squeaking noise when the suspension moves up and down.
* Worn or damaged sway bar bushings: The sway bar bushings help to reduce body roll when you turn the steering wheel, and they also help to reduce noise and vibration. If the sway bar bushings are worn or damaged, they can cause a squeaking noise when the suspension moves up and down.
* Lack of lubrication: If there is a lack of lubrication in the steering system or suspension components, it can cause metal-to-metal contact and a squeaking noise.
* Other potential causes: In some cases, a squeaking noise in the front end of a vehicle can be caused by other problems, such as a bad wheel bearing, a worn-out brake pad, or a bent or damaged steering component.
If you are hearing a squeaking noise when steering and pushing up or down on the front end of your 1997 Ford F150 pickup, it is important to have the vehicle inspected by a qualified mechanic as soon as possible to determine the cause of the noise and have it repaired. Driving with a damaged or worn suspension component can be dangerous, as it can affect the vehicle's handling and stability.