Woosh Sounds When Stepping On Brakes?
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Supreme Member
Joined: Apr 2008
Posts: 2,342
Likes: 24
From: Dumfries, VA
Car: 1985 Z28
Engine: 334 Stroker Superram 222/230
Transmission: Full Manual 700R4 / 3k Street Edge
Axle/Gears: 3.90 Eaton, Moser, Richmond & More
Woosh Sounds When Stepping On Brakes?
My car has done this ever since I bought it, but recently the braking effectiveness has progressed to the point where I know something isn't right.
Whenever the brake pedal is depressed when there is vacuum present (Engine running or engine off and vacuum stored in reservoir), a whooshing sound can be heard from under the dash. This whoosh noise comes from the hose that attaches to the cruise control switch. Is this normal?
Whenever the brake pedal is depressed when there is vacuum present (Engine running or engine off and vacuum stored in reservoir), a whooshing sound can be heard from under the dash. This whoosh noise comes from the hose that attaches to the cruise control switch. Is this normal?
Junior Member
Joined: Jan 2011
Posts: 46
Likes: 1
From: Auburn, CA
Car: 1988 IROC-Z Camaro
Engine: 355 TPI
Transmission: 700r4
Axle/Gears: BW 9 Bolt 2.77 Posi
Re: Woosh Sounds When Stepping On Brakes?
My brake pedal makes a squishy woosh sound too when depressing the brake pedal. I thought it was normal for GM cars of that era.
Junior Member
Joined: Jan 2012
Posts: 16
Likes: 0
From: Nashvile Tn
Car: 1986 IROC-Z Ttop & Iroc Coupe
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: posi unit?
Re: Woosh Sounds When Stepping On Brakes?
it is most likely the brake booster mounted on the firewall 98 bux at autozone.non repairable unit and dont be suprised if the brakes just completely stop working unless you pump the crap out of them to stop. my 86 does that right now sounds like it sucking air or something.Most all the brake boosters are interchangeable I believe the 4th Gen is too w/3rdGen
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