Let it sit a few hours
Fire it back up
Turn the steering wheel maybe 1/2 a turn
Let it sit again (engine off)
Turn it the other way
Let it sit
Continue this process till you run thru from one side to the other
If you look into the reservoir after you turn it, you will see the power steering juice is cloudy. Actually this is tiny air bubbles. They will rise to the top of the reservoir and pop. Not only are they in the reservoir, they are throughout the system. They will rise to the top wherever they are. Bigger bubbles will form, they will circulate back into the reservoir and rise to the top. This the reason you need to give it time!
Jumping in and turning the wheel back and forth ain't doing nothing but recirculating the aerated power steering juice thru the whole system. The object here is to get the aerated juice into the return (inlet) of the reservoir and rise out, but not get grabbed up by the pump and shot thru again ('course, this cannot be a perfect strategy).
This is sorta not a 'set in stone' way to do this, you might modify how I first described this, different vehicles/ different designs may do this faster than others. It may have to sit overnight, Getting the air out is the goal. Your other new pump may have been just fine.
You may see a big improvement soon, or it may take more sitting time to get most of it out, eventually driving/ parking it will get the remainder out.
Gosh, I'm glad both of mine have manual steering!
Let us know how it goes,
Images (Click to enlarge)
Saturday, September 3rd, 2016 AT 8:46 PM