Power steering
 

So this problem started about two days ago. The power steering in my car will randomly stop working. But it doesn't feel like it completely stops feels more like it looses power it flips back and forth every 5-10 minutes. Any idea what it could be???

My car did the exact same thing. It still might - ever since I did the HICAS delete I unhooked my power steering. I've read a few times that there's supposed to be tight steering at higher speeds, but I can never find any more info about that. If that's truly the case there's probably a solenoid acting up somewhere.

my z has the same problem I thought it was a air pocket in the system ?