Power steering problem.

steering rack or gear . 2X2 - 4X4 engine . Depends on steering system .
When you turn the steering wheel, the steering gear rotates the pitman arm which forces the relay rod to one side. The tie rods connect to the relay rod with the ball studs. The tie rods transfer the steering force to the wheels. Use the tie rods in toe adjustments. The tie rods are adjustable. The pitman arm support the relay rod. The idler arm pivots on a support attached to the frame rail and the ball stud attaches to the relay rod.
The 2 tie rod are threaded into the tube and secured with jam nuts. Right and left hand threads are used in order to permit the adjustment of toe.

Binding linkage , steering gear worn etc....

Power Steering System Description and Operation (w/o Electro-Hydraulic Steering)
The hydraulic power steering pump is a constant displacement vane-type pump that provides hydraulic pressure and flow for the power steering gear. The hydraulic power steering pumps are either belt-driven or direct-drive, cam-driven.
The power steering fluid reservoir holds the power steering fluid and may be integral with the power steering pump or remotely located. The following locations are typical locations for the remote reservoir:
• Mounted to the front of the dash panel
• Mounted to the inner fender
• Mounted to a bracket on the engine
The 2 basic types of power steering gears are listed below:
• A recirculating ball system
• A rack and pinion system
In the recirculating ball system, a worm gear converts steering wheel movement to movement of a sector shaft. A pitman arm attached to the bottom of the sector shaft actually moves one tie rod and an intermediate rod move the other tie rod.
In the rack and pinion system, the rack and the pinion are the 2 components that convert steering wheel rotation to lateral movement. The steering shaft is attached to the pinion in the steering gear. The pinion rotates with the steering wheel. Gear teeth on the pinion mesh with the gear teeth on the rack. The rotating pinion moves the rack from side to side. The lateral action of the rack pushes and pulls the tie rods in order to change the direction of the vehicle's front wheels.
The power steering pressure hose connects the power steering pump union fitting to the power steering gear and allows pressurized power steering fluid to flow from the pump to the gear.
The power steering return hose returns fluid from the power steering gear back to the power steering fluid reservoir. The power steering return line may contain an integral fin-type or line-type power steering fluid cooler.
In a typical power steering system, a pump generates hydraulic pressure, causing fluid to flow, via the pressure hose, to the steering gear valve assembly. The steering gear valve assembly regulates the incoming fluid to the right and left chambers in order to assist in right and left turns.
Turning the steering wheel activates the valve assembly, which applies greater fluid pressure and flow to 1 side of the steering gear piston, and lower pressure and flow to the other side of the piston. The pressure assists the movement of the gear piston. Tie rods transfer this force to the front wheels, which turn the vehicle right or left.


Your best bet , take it to a qualified repair shop.

LIFT YHE TRUCK AND REMUVE THE RETURN HOUSE TO THE RESERVOIR AND PULL THE HOUSE DOWN TO A RECOVER CAN PLUG THE RESERVOIR WHEARE YOU REMUVE THWE HOUSE FILL THE RECERVOIR WHIT NEW FLUID AND STAR ENGINE KEEP ADIN FLUID TOILL CAME CLEAR AT THE RETURN HOUSE NEE TWO PERSON TO PERFORM THE JOB BECAUSE NEED TO KEEP ADIN FLUID WHEN YOU TURN THE STEARING WHEEL LEFT AND RIGHT

On a steering wheel are 2 pins. These pins turn the signals off as the wheel returns from making a left or right hand turn. They reset the blinker mechanism by bumping the blinker arm and pushing the arm back to the center position. You can sometimes see these little pins that reset the blinker if you look between the steering wheel and the steering wheel column. There is a little gap where the steering wheel is enabled to turn with out rubbing the column. You will also see a circular copper plate in there where the horn makes electrical contact by a little flat tension arm and rubs the copper surface as the wheel spins in either direction.
To repair a damage blinker pin, the steering wheel most likely has to be pulled off and the pin repaired and steering wheel returned back onto the column. Not a big job at all, just more of a pain then anything. Some steering wheels are on pretty tight on their splines and a puller may be needed. If the pins are still intact in the back of the steering wheel, then the blinker mechanism has a problem and is not be triggered to return to center by the pins.

try press the foot brake first

power steering only works when motor is running. If car is running and you are having this problem it could be as simple as low power steering fluid...have it check...good luck and hope this helps some.

Part blockage in oil lines or bad steering rack. Flush system and check. If no improvement repair/replace rack.

check the fuses at the front passenger foot well, the middle one on the top that's halfway pulled is for the solenoid that releases the key. its also for the rear right turn signal so you should check the wiring there too.

Jack car up. Hold the front wheel with both hands in the 3 and 9 poistion. Try and rock it towards you and away. If it is easy to move the wheel bearings need replaced.

Take it to an alignment garage and get the tracking/alignment sorted. Are the inner edges of the tires worn?

Push down on the wing hard to compress the suspension and release, if one side returns slowly, new shock or spring is needed. See if you can spot any cracked springs too.

Try turning the steering wheel (hard) right and left while turning the key. Steering lock , and ignition lock work in conjunction with each other.

sounds like the problem is in the valving in the steering box. You may have to get a new steering box. i would get it checked.