OK get the laughing over. When I apply the brakes, not at first but after a few seconds the brake pedal will go soft just a little and then it makes this dumb mooing noise. It does not happen everytime I use the brakes but a lot more than I'm willing to ignore..LoL. I was thinking its a problem with the Brake Booster, so I replaced the easy items such as booster check valve and hose etc. no Help. Any suggestions??