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

[Paul Gailus]

Joe,

Does the new J-hose include the restrictor in the center
of the hose? If it's a new dealer part (and the correct one)
I'm sure it must have the restrictor and you can ignore the
rest of this email. But if the hose was rebuilt it may have
been left out.

The reason I mention this is that if the Audi system is
like some other brake/steering systems powered with a
hydraulic pump, the restriction is used to limit the flow
into the accumulator when the pump pressure gets higher
than the accumulator pressure. This prevents the power
steering system from momentarily getting "short-changed"
on pressure when the accumulator is recharging.
So if the restrictor is missing, it could cause your symptoms
when the pump outlet pressure gets higher when you're
turning the wheel, or when the accumulator pressure drops
with hard braking.

Paul


----- Original Message -----
From: Joseph Pizzimenti <pizzoman at yahoo.com>
To: <s-car-list at audifans.com>
Sent: Sunday, December 01, 2002 8:34 PM
Subject: [s-cars] Upper strut mount R&R time?


> 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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