Hello.
Replaced the steering pump with a new a few days ago. This one does not perform at idle (at high rpm does not matter)
Where/how/what to measure to know the proper pressure ? Anyway to raise pressure ? Has anyone ever had an internal wall collapse of the rubber hoses that could block flow ?
When purging at replacement, no signs of metal particles in the drained fluid.

 

You did bleed the air out of the nipple right? I seem to remember that will cause it to not work well at idle RPM? The nipple on top of the steering box. Instructions below.

If so, There are bad pumps out there.

I think a collapsed hose is possible but -- hoses usually collapse under vacuum not pressure (or if kinked or bent).

Failing all that. Thinking about what might have been jostled from changing the pump...

-- Is either of the supply or return hose perhaps kinked in a weird way?

-- the serpentine belt def routed properly / pump turning the right direction (not even sure if possible to do it improperly but I do know on some cars it is indeed possible to go the wrong way round idlers and components and the belt still fits

 

New or remanufactured? I have seen reman with the outer pressure ring installed incorrectly.

 

Hi. Thanks.
Did the purging/bleeding from nipple back to the reservoir inlet using a clear vinyl hose. All normal, turned the steering wheel end to end 5 times, and it worked well then.
Pump is new, suppose chinese as everything else.---->
Once in a life I had to deal with a hydraulic hose in a big grass mower that its inner rubber layer peeled/ruptured and collapsed inside blocking flow. Paranoid since then. Was brutally hard to diagnose a behaved different depending on speed.