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Old 06-19-2005, 11:42 PM   #1
25psi
Scooby Specialist
 
Member#: 3086
Join Date: Nov 2000
Location: Coram LI NY
Vehicle:
2001 2.5 RS
Silver

Default Brake Booster Check valve

Hello all.

Anyone knows where it is and what its for?
Any pic or diagram would be very helpful.

Thanx a ton.

25PSi
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Old 06-20-2005, 08:48 AM   #2
OneOBS
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Member#: 63076
Join Date: May 2004
Location: Caulifornia
Vehicle:
2004 Outback Sport
Red!

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Its in the vacuum line running to the booster. Its there so that when you go into boost, you don't pressurize and blow up the booster. A good thing to have - if you have a turbo.
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Old 06-20-2005, 02:24 PM   #3
soccer_freak_m@hotma
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Member#: 47261
Join Date: Nov 2003
Chapter/Region: W. Canada
Location: Edmonton, Alberta
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Actually you wouldn't blow up the booster. I know someone that replaced that vaccuum hose with one without a vaccuum check... all it does is blow air into the cabin behind the brake pedal when you boost.

in case you are wondering, it's a little bulge in the hose going from the intake manifold to the brake booster. It can't be removed or inserted, and it comes in the hose. It is only available through subaru.
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Old 11-10-2009, 07:51 AM   #4
ryanmcarthy
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Join Date: Jun 2009
Vehicle:
2005 Impreza STi
Blue

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If something is wrong with this, would it cause an Engine Check light to come up on the dash, with error 'Brake Booster Valve' ?
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