My power steering is out on my 87 supra. i checked the fluid level and it's good now, and it seems to be pumping through, but my steering is still stiff. what should i do?

Check the screen in the bottom of the reservoir. It may need cleaning.

i will check that out. but what else could it be?

If the fluid level is not low, and the screen is good then it could be the pump.

A clogged screen is a common occurrence.