Air noise from brake pedal


#1

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


#2

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


#3

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.


#4

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


#5

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


#6

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.