# Air noise from brake pedal

**URL:** <https://community.cartalk.com/t/air-noise-from-brake-pedal/12075>\
**Category:** Maintenance/Repairs\
**Created:** [March 22, 2008, 5:34pm UTC](https://community.cartalk.com/t/air-noise-from-brake-pedal/12075 "2008-03-22T17:34:11Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![SidneyCollins](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/sidneycollins/32/359_2.png) [@SidneyCollins](https://community.cartalk.com/u/SidneyCollins)\
**Post date:** [March 22, 2008, 5:34pm UTC](https://community.cartalk.com/t/air-noise-from-brake-pedal/12075/1 "2008-03-22T17:34:11Z")

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I drive an veteran 1994 F-250 for work. When use the brake pedal, I get a noise like air escaping from below the dashboard. The brakes are a little soft and the front driver side tire is the first to lock up under heavy braking.  
  
  
  
 Any suggestions

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [March 22, 2008, 5:44pm UTC](https://community.cartalk.com/t/air-noise-from-brake-pedal/12075/2 "2008-03-22T17:44:48Z")

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The power brake booster has a leak. Get it replaced before you lose all power assist to the brakes.

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**Author:** ![SidneyCollins](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/sidneycollins/32/359_2.png) [@SidneyCollins](https://community.cartalk.com/u/SidneyCollins)\
**Post date:** [March 22, 2008, 8:26pm UTC](https://community.cartalk.com/t/air-noise-from-brake-pedal/12075/3 "2008-03-22T20:26:33Z")

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Thank you.

I had the truck at a shop that claimed to repair transmissions and brakes. I need a transmission repair. I asked that they check the brakes while the truck was there. The service manager claimed that the brakes worked fine. Knowing this was not correct, I paid for the transmission repair and left. And had the truck towed back to the shop to have the transmission repair corrected.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [March 22, 2008, 9:16pm UTC](https://community.cartalk.com/t/air-noise-from-brake-pedal/12075/4 "2008-03-22T21:16:03Z")

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Now you have two reasons for not returning to that mechanic.

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**Author:** ![Beadsandbeads](https://avatars.discourse-cdn.com/v4/letter/b/c57346/32.png) [@Beadsandbeads](https://community.cartalk.com/u/Beadsandbeads)\
**Post date:** [March 23, 2008, 1:04am UTC](https://community.cartalk.com/t/air-noise-from-brake-pedal/12075/5 "2008-03-23T01:04:56Z")

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If your truck has an automatic release for the parking brake, the noise could be coming from that system. It may be vacuum operated.

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**Author:** ![meaneyedcatz](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/meaneyedcatz/32/692_2.png) [@meaneyedcatz](https://community.cartalk.com/u/meaneyedcatz)\
**Post date:** [March 24, 2008, 4:42am UTC](https://community.cartalk.com/t/air-noise-from-brake-pedal/12075/6 "2008-03-24T04:42:00Z")

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there is a small wad of felt or some other material in the booster where the brake pedal rod goes in . once in a great while it will come out and a loud noise will be heard. it is normal and that is the reason for the muffler material. i’m not saying this is the solution but see if it is missing.