sounds like the inside of the pump isn't turning,backyard mechanic try to locate the pressure hose to the steering box,now carefully it might take two ,remove the hose and see if you have pressure
no
Many things can cause that, the simplest cause being lack of power steering fluid.
If you have rack and pinion steering, the steering gear will need replaced.
A bad alternator. Turning the steering wheel all the way is very demanding on the power steering which draws power from the engine and can cause the idle to dip down. A weak alternator is usually the cause for the stalling.
Low steering fluid can cause a steering wheel to whine when turning. A worn steering belt can also cause a steering wheel to whine when a car is being turned.
ummm power steering
Check out the bearings in the steering column and the knuckles in the steering shaft
Worn seal on steering rack Worn seal on p.s. pump Leaking hose?
The steering pump fluid is low (usually the pump will be noisy at this point) or the steering rack is leaking. In either case the fluid is low due to a leak in the steering system.
Check and see if your power steering fluid level is low.
Anytime I've ever heard a humming noise when turning the steering wheel on any vehicle,It has always been due to low power steering fluid
check the power steering rack or the steering pump