For the ticking noise, remove the drive belt, then run the engine just long enough to determine if that noise is gone. If it is gone, spin the individual pulleys by hand to feel if something is catching or binding.
The buzzing noise can be caused by the power steering pump or by air in that system. Adding fluid to make the noise decrease suggests the cause is the pump. Air would not be expelled simply from adding more fluid unless the level had been so low that air was being sucked in. If the fluid was that low, there is a leak that must be diagnosed and repaired.
Be aware that Ford power steering systems have caused a real lot of frustration when trying to bleed the air out. Air in the lines will compress under pressure, and can be trapped in high spots, then, when the engine is stopped, that air expands and pushes fluid out of the reservoir and makes a horrendous mess. There are special funnels and tools on the market to aid in bleeding these systems. Do not get excited if it takes some time to get all the air out.
Friday, March 3rd, 2017 AT 4:58 PM