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Hiss when pressing brake pedal

specialk440

New Member
Joined
November 4, 2006
Messages
8
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City, State
Ohio
Year, Model & Trim Level
2006 Limited 4.6
When I push my brake pedal, I hear a hiss, like the diaphragm inflating/deflating, whatever. It only lasts ehile the pedal is moving. Once I'm stopped, the noise doesn't exist. Only while the pedal is in motion. The vacuum assist seems good, no loss in fluid, and pedal is firm and holds position when the car is off, spongy and low when the car is running. (getting system bled tomorrow). Is the noise something normal for this car? The last car I remeber actually hearing this in was my Mom's 72 duster.
 




BrooklynBay

Moderator & long time member.
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November 11, 2005
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City, State
Brooklyn, NY
Year, Model & Trim Level
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waskly

Explorer Addict
Joined
August 21, 2010
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City, State
Crooklyn NY!
the noise is the break booster leaking into the vehicle.
 




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