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1999 chystler 300m brakes?
Why does it sound like air is being released when I press my brake pedal? Only when the car is on. Also there is a similar noise when i open the hood coming from the master brake cylinder area. It just sounds like air is escaping. Also, the brake pedal goes all the way down to stop vehicle. Already had the brakes bled. But it's still the same. What could be wrong?
The car didn't make that noise before. It makes that noise inside the brake pedal area the whole time the pedal is being pressed and stops when it's depressed
3 Answers
- choko1usLv 51 decade agoFavorite Answer
My first place to check would be the booster vacume line. That always makes a hissing sound when its damaged and the pedal will hit the floor.
- mdcbertLv 61 decade ago
Dude that is only the vacuum being released from your "power brakes" booster. MY car dies it, My wifes car does it. It is NORMAL!
Vacuum from the engine intake goes to the booster and when you press on the brakes, the vacuum is lost. Then when you release the brakes, the vacuum builds back up and the process starts all over again.
When you turn the car off, hit the brakes several times in a row, push down hard, release them slowly, the "boost" will go away after a couple of strokes. starting the engine restores the brake boost.