[V8] Pressure switch power booster???(newbie)

[dsaad at icehouse.net]

If you said "Power Booster Pressure Switch" I might guess there was some sort of
pressure switch on the brake booster servo. I am not familier with this switch -
but you may in fact have a leaky one. Unfortunately there are lots of places for
hydraulic oil to leak from, and most of them are not much fun to repair.
The type of oil is also quite important. Mineral Hydraulic oil is correct.

Best thing to do IMHO is to give the whole engine bay and engine a good cleaning
and start tracing the leaks.
If you use a pressure washer (as I always do) be careful around the distributor
bases because they are vented and water can get in, and around the idle/WOT
switch at the front of the motor. Many have reported water in the connector that
has caused a problem for them.

If you still have the belly pan installed, it tends to make leak troubleshooting
very hard. You may want to take it off for a while. Would'nt hurt to hose it off
too. Don't leave it off too long though if it is raining a lot. This cover helps
protect the alternator.

Dave


Quoting subhendu basu <vaxdesignergc at yahoo.com>:

> Hi folks
>
> I recently purchased a 90V8 on ebay. The seller mentioned that there was a
> slight leak in the power steering system. He says that he has identified the
> problem now and that it is the Pressure Switch Power Booster that was broken.
> It seems that the brake light (dash) would also stay on and that changing the
> switch will resolve all of these issues. The questions I have are the
> following:
> 1. Does this make sense to all you V8/Audi experts?
> 2. He says that it will be fixed for $175 (including labor) which seems great
> coz I was afraid that it could be a bigger problem.
> 3. He replaced the power steering fluid with a 'mineral hydraulic fluid'.
> Does this sound like the right type of fluid? because I know that the V8
> needs special fluids and coolant. Looking forward to hearing from all.
> Thanks
> Ben
>
>
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