It could be that your tierods are completely gone or the play is in the steering box .I have heard that there is a adjusting screw on the steering box to help with the play , but not sure .
yes
Find out where the wear is in the steering linkage. Idler arm and tie rod ends most likely.
A worn out power steering pump, or steering box.
The steering free play doesn't adjust.. if you have free play in your steering, you have a component worn out somewhere, and it needs to be replaced. Check the u-bolts on the steering column, check the drag link, tie rods, pitman arm, and spring pins for slack, check the steering pump and gearbox, determine which is the faulty component, and repair or replace it.
start by checking your front end for wear in the tierods and all other linkage. the I would suspect your steering box is shot.
You can adjust the steering box some. Or possible ball joint problems. If the problem is lurches and surges in the steering (can feel like loose idler arm, loose ball joints, etc.), one common cause is a faulty steering position sensor. This $60 sensor at the base of the steering column (inside the vehicle) tells the variable assist power steering how fast you are turning the steering wheel.
How to take the play out of steering box from a1990 4x4 le 150 pickup
To repair:Determine if the play in in the rack and pinion box (very Rare) or in another steering component. The faulty rack or the other faulty part will need to be replaced.There are no possible adjustments for steering play!
Worn steering components
If the gearbox is causing freeplay in the steering wheel, then the gearbox needs to be replaced.
If you know what you are doing. You may also just have other worn parts that need replacing. Check you steering components very carefully.
You will need to replace which ever part the play is in.You will need to replace which ever part the play is in.