driving me crazy
 

i thought i had it, i changed the power steering pump and it came right back ,, the noise wining hissing what ever you call it ,, seems it does after it warms up ,, maybe its air,, after it warms up it starts to generate air ??? got me ,, this was suppose to be a simple swap not for me,, maybe i will drive it a few days and see ,, i couldnt have gotten 2 bad pumps ,,,

i was told this ---> Replace the PS fluid again and put in Mobil1 Synthetic transmission fluid,,, i dont know anything about this


thanks

Try finding a vacant carpark and do fugure 8's going from lock to lock .
Do it with the engine at low revs and see what happens .

noisy power steering
 

I don't know if this will help but my 03 Dodge Caravan had a noisy power steering. It turned out to be a clogged return screen in the reservoir. In this case the screen is part of the reservoir so a $17.00 reservoir replacement fixed it. I don't know if there is a screen in your truck. :)

Put the front end on jack stands, start the motor and turn the wheel lock to lock a few times. This should purge the air from the system. Wheels off the ground. You want to move volume not create pressure.

i will try putting on jack stands ,, its the second pump i put on ,,, now could it be something with gear box ?? it was used ( toyota ) i dont know anything about it ?

thanks guys

This is a long shot but, do you have the high presure and return lines attached to the correct ports.

i was thinking that too ,, but would it work if hook up wrong ????

If it's a Ford pump, it's VERY common (Google it). Mine whines because the return line is not 110% sealed and apparently sucks in air as the fluid is returned. 2 hose clamps and a thorough bleeding of the system calmed it down quite a bit. Put FlowMasters on it that dump under the bed (like mine) and you'll barely be able to hear it.:)

Look for foam in the top of the reservoir. That can indicate a need for purging (raise and turn stop-stop), low fluid, or an air leak.

nope its a GM pump ,, maybe the pump is too small for the toy gear box ???
got me i am driving it out to dinner and tomm i will jack it up and do the stop to stop ,,, like i said it seems to do after it get hot

i was told over at the toyota forums that i might need to bleed the box ??

i dont know

Horvaths has you covered. Make sure you have no air leaks then do what he said. It took a lot (maybe 30 times stop to stop) to get all of the air out of mine. Any air getting in will nullify all of your work.

just wondering if i have a leak at 1 of the lines ,, you would think i could see fluid ??

A leak on the pressure side should be obvious, but on the return side not so much.