[s-cars] Upper strut mount R&R time?

[Joseph Pizzimenti]

Okay, guys, I need you on this one as I'm stumped and
about to bash my head into a wall.

Steering:
No Servo relay
New rack
New bomb
New pump
New J hose
New control arms
One new tie rod, other one has fresh ends
H&R/Bilstein Sports
ASW Camber plates
Cleaned out filter in reservoir
Flushed and replaced w/new Pentosin
ATE Superblue in brake reservoir
Big Reds w/Pagid Orange pads up front
Both levels fine, but superblue is a little high

Symptom:
When turning the wheel, intermittently there is what
feels like a hydraulic hiccup, i.e., steering will
turn normally, but I will suddenly lose assistance for
a brief sec and hear a mooing come from the system.
Mooing also happened when I was cleaning off the
rotors the other night (accelerate to 100 or so at 3AM
on straight road and warm up pads, gets rid of noise
somewhat from Orange Pads) and as I was coming under
50mph, I heard the mooing again.  Did not sound good.
I also get it when the car is starting off and feel it
through the steering wheel, as I do when the "hiccup"
happens.  Please help, I don't want to break anything
else.  Upper strut mounts, perhaps?  I'm at a loss
here.

Thanks,
Joe

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