I was wanting to know will a power steering gearbox off a 1988 4wd PU with IFS work on a 1991 4wd PU with IFS?

 

yes, they are the same from '86-'95

 

Thank you..

 

What you may want to try if all the bolts are hard to get at and rusted like mine were is just take the gear shaft out of the 2 gearboxes takes 5 mins as compared to the 2 days it would have taken me to get the gearbox out. BUT i took a shaft out of a 89 runner and tried to put it in my 93 and voila the two shafts were different (same in every way cept one had 3 teeth the other 4). So what i did was just find a junked 93 runner and got the shaft out of that. I dunno if the 91 has 4 teeth or not, the 88 does but the 91 might have 3 like mine. Its worth it to check just to save the trouble. If you do got this route you have to remove the 3 bolts holding it to the chasis, and you have to play around with it to get it back in. Will require a hammer and it only goes in one way right, other ways and you get like 1 turn in your steering wheel. Just try seating the teeth in in different posisitions. Just a little tip in case you wanna try this, but it might not be compatible.

 

I wouldn't try goofing with any of those shafts unless you know what you're doing. I tried doing what Squishy said up above a couple years ago. I got the shafts swapped, the whole thing put back together, cranked up the truck & my steering wheel did circles without a single movement in the front end except for the steering shaft. I just bought the $399 lifetime replacement sucker from Allpro Offroad. Haven't had any problems since I got it a year ago.

FRED!

 

I wasnt too keen about fooling around with it either, but a trusty toyota mech had done it before and told me what to do. I would not by any means jury rig something up for something as important as steering. But what i was trying to say is if you have the exact same gearboxes and getting it off the truck is a big job ( I would have had to remove my radiator and fabricate new lines) then replacing the shafts will work and save you a lot of trouble. But if you box comes off easily then by all means replace the box.