First check the fluid level. If it is low, the pump will suck in air, resulting in the whining noise and hard steering. If the level is low, that is the time to check for a leak. The o-ring is on the pump end of the high pressure hose. That o-ring typically leaks from improper installation procedures. It is more common to find the rack and pinion steering gear leaking. To find that, remove the clamp from the small end of one of the inner tie rod end boots, then open it up a little with a pick or small flat blade screwdriver. Power steering fluid will run out if the steering gear is leaking.
Noise will also occur if the wrong power steering fluid is used. I do not know if that will also cause hard steering.
Monday, January 11th, 2021 AT 5:39 PM
(Merged)