Loud Air Sound When I Hit Brake

Haley Blankenship

Asked by Oct 26, 2014 at 08:03 AM about the 1999 Pontiac Grand Am

Question type: Maintenance & Repair

I got new brake pads, had my brakes
bled, new brake lines, changed the
master cylinder and STILL I hear loud
air when I hit the brake pedal. It even
does it if my car Is off. My brakes also
go all the way to the floor? They won't
stop neither and even in park or at a
red light my cars RPM shoot up with
out even hitting gas. I'm tired of trying
to figure out the problem can anyone
give me advice? I have a 99 Pontiac
grand am

8 Answers

Haley Blankenship

Also I got told I need new brake booster? But who knows at this point.

1 out of 1 people think this is helpful.

This is brake booster and uses a lot of vacuum. If vacuum hose has come off you will hear a massive vacuum leak,---'air sound'-- image will size up

1 out of 1 people think this is helpful.

the booster has a diaphragm that could be ruptured, inside

Haley Blankenship

Okay do u think all I need to do is replace the whole booster and it will be good to go?


Well can't say that for sure.. a failed booster would not cause brake pedal to go to floor.... you will still have brakes but not with vacuum booster assist. Was only addressing the 'air noise'


I can understand your frustration... sorry I was no more help but a vacuum leak can cause the engine to rev up as you describe

1 out of 1 people think this is helpful.

Check and make sure your booster vacuum hose house running from your intake to your brake booster is hooked up and doesnt have any cracks in it.

David Michealmartin

I'm getting a air leak sound coming from under the brake pedal i here it could be a circle rubber peice behind the master cylinder and a friend told me i might need to replace the master cylinder to what should I do Chevy Impala 04

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Brakes 10 answers

    Brakes are out, also the brake peddle goes all the way to the floor & don't work. Just curious on what this issue could be. . Thanks

    1996 Pontiac Grand Am 2 Dr GT Coupe


    Maintenance & Repair

  • Brakes not working 3 answers

    I have very weak brakes. I can sit and pump the brake about 10 times and then I am ok but if I wait just a couple seconds I know longer have brakes. I have changed out the passenger side caliber, ma...

    2003 Pontiac Grand Am SE


    Maintenance & Repair

  • Loud noises around wheels

    My car make a really loud noise as I accelerate and brake. What is it please

    2004 Pontiac Grand Am GT


    Maintenance & Repair

  • What would cause the mass air flow sensor constantly put out low input 41 answers

    Ok so just put in a brand new mass air flow sensor and it still coding out po102 which is low mass air flow current.what could it be? Dash lights stay on. Car idles erratically and doesnt go pass...

    2001 Pontiac Grand Am GT


    Maintenance & Repair

  • what does it mean, when you have a noise that kind of sounds like a loud horn when you back up 6 answers

    when I back up, I have a loud noise. It kind of sounds like a loud horn. It's only for a couple of seconds while I back up. What could this mean?

    2006 Pontiac Grand Prix Base


    Maintenance & Repair

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,981 nationwide Grand Am listings starting at $1,995.


Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
Reputation 7,080
#2 John Saffrahn
John Saffrahn
Reputation 1,480
#3 Tom Demyan
Tom Demyan
Reputation 1,240
View All

Related Models For Sale

Used Pontiac Grand Prix"
30 Great Deals out of 4,355 listings starting at $1,995
Used Chevrolet Impala"
938 Great Deals out of 35,697 listings starting at $1,500
Used Pontiac Firebird"
9 Great Deals out of 904 listings starting at $2,900
Used Chevrolet Camaro"
799 Great Deals out of 38,852 listings starting at $2,650
Used Chevrolet Malibu"
1,151 Great Deals out of 73,044 listings starting at $695
Used Ford Mustang"
737 Great Deals out of 41,065 listings starting at $900
Used Pontiac Bonneville"
3 Great Deals out of 859 listings starting at $2,950
Used Honda Civic"
1,148 Great Deals out of 59,092 listings starting at $995
Used Honda Accord"
1,263 Great Deals out of 78,694 listings starting at $1,400
Used Nissan Altima"
1,360 Great Deals out of 87,464 listings starting at $1,095

Used Cars For Sale

2004 Pontiac Grand Am For Sale
482 listings starting at $2,699