I replaced my power steering pump in my '93 V6 p/u and them bled it as the FSM said. Jacked up the front and cycled the steering while keeping the fluid up to the level. Anyway I have probably done a couple hundred stop to stop cycles and I still have lousy steering. I am guessing that there is still air in it somewhere. Is there something I missed or somewhere else I should look at? 33x12.5s on pavement w/ no power steering really sucks.

this is a closed system ... all the air will go to the top . after driving and turning the wheel a couple of times , all the air should bubble out the resivoir .. have you relocated the resivoir?

make sure your topped up on fluid .. other then that .. I'd say "other problems" .

well that is what I thought. Is there anything I could have messed up?

is the pump new or used?
is the pump noisy?

could be you got a bad pump.
i cant see hooking the lines up backwards , i guess this is possible.
could be a bad ps box as well (internal blowby).

Did you bleed the steering box? Some of the boxes have a bleeder like on the brakes, some you have to loosen the adjusting nut on top of the box. On the ones with out the bleeder, you have to loosen the nut 4-5 turns and get the washer away from the box because the washer has an O-ring built into the center and it seals around the stud not allowing the air/fluid to bleed until it is away from the housing. You may have to bleed the box a few times. With the engine running, cycle the steering, bringing it back to center, loosen the bleeder or jam nut until nothing but fluid comes out, tighten the bleeder/jam nut, shut off the engine. Check the reservoir to see if the fluid is clear or not. If it is not clear, there is air in it. Let it sit 15-20 minutes to allow the fluid to become clear. Repeat the bleeding process, including the box until the fluid is mostly clear when you shut the engine off.

I rebuilt my PS pump and had the same experience. So I went out and bought a reman'd pump... and still had the same problem.

I found a post on Pirate that described a bleeding procedure that worked: Put the front on jackstands so that both front wheels are off the ground. Take the cap off the PS pump and surround it with rags, just in case fluid bubbles out. With the engine off, cycle the steering wheel lock-to-lock 10 times, then check the pump and refill with ATF, if necessary. (You are using ATF, aren't you?) Do this until you've cycled the steering 50-60 times and there are no more tiny bubbles visible in the fluid. Put the cap on, lower the vehicle and repeat 10 cycles or so with the engine on. Check the fluid level and again, check for leaks, and go for a test drive if everything looks OK. It should be much improved.

Let us know how it works out.

Mark

That is how I have been doing it so far and I have done at least a hundred cycles so far. I was thinking along the lines of a bleeder on the box. Didn't know if there were any other "high points" in the system that could hold air or not. Guess I will check the box next.

I followed the bleeding instructions on the Howe site:
- http://howeperformance.com/pdfs/bleed-instr.pdf

Might also be a defective pump. I rigged my high pressure side so that I can insert a pressure gauge to see what is going on. Mine is all plumbed with AN fittings, so that is a relatively easy task.

I thought I first had a bad box, which I did, but still had poor steering boost afterwards. With the gauge, saw very low pressure, so thought it was a trapped air issue. After a day of bleeding decided it was the pump. New one installed, same issue. What it came down to in my case was that the seals in my hydraulic assist ram were leaking and that was bleeding the pressure off the box. New ram and problem fixed (old ram only leaked internally, so was not suspected since no external leaks observed). Not saying that this is what is happening in your case, just that it could be anything.