If a rack could be air in system
Could be steering rack going bad losing pressure What type of unit is this? I have a masey tractor that gets out of adjustment and will turn beter one way. but if it is a car i would look for an obstruction,or linkage that is bound.
== What vehicle is this in? On some older British and American cars, they had adjustable spool valves which had to be centralized or this problem would arise. If it is a newer vehicle, it sounds as though you still have a problem with the spool valve in the steering rack. Could be a broken Teflon ring, blocked ports in the valve (they are tiny). www.powerbrakeandsteering.co.za
might be your power steering or something in that nature
It could be from worn bearings on the shaft that the pulley turns.
Power steering belt slipping?
Power Steering Fluid Or Power Steering Pump
If you cannot make left or right turns with car , this may mean the steering has a problem. The axle inclination of your steering may be faulty and this would require immediate attention from a mechanic.
I Would Suggest A Product Made By LUCAS POWER STEERING TREATMENT. Worked Great For Me. Hey Another Thing Your Belt May Not Be Tight, Have Your Power Steering Belt Checked. If making turns causes your P.S.P to squeal, it may be low on fluid. Try adding p.s.p fluid.
If you mean "what" is making noise when you turn the steering wheel? It usaually means you need power steering fluid. If you run too long without power steering fluid it will make your power steering go out. If it is making a shuttering noise when you take sharp turns. Your rear differential may need to be serviced. I would have is burnished.
If it turns hard in both directions evenly, I would suspect the pump is at fault. If it turns hard in one direction unevenly, I would suspect the rack.
could be something with the steering or with the power steering pump.
If it was ordered with power steering it would have it.
Power steering box... Steering fluid level low,dirty or needs replacing... If power steering fluid is white then your box is damaged...
Bad power steering pump