Powermaster help

[charliep]

Stock 87 t type. When I am sitting at a stop light with the brakes applied. Every once in a while the brake pedal pulses or vibrates. Is there something in the powermaster I can change before replacing the whole thing???

Thanks
Charlie

 

[FastGN007]

I've had this same problem for about 8 months now. I can also hear a sound at the same time. It sounds as if the electric motor is running. It has plenty of brake fluid and my power master is about a year old. I wish i knew what it was. It has been doing it less since the weather is warmer and i replaced my pads.

 

[charliep]

Thanks for the input. The car stops fine its just real annoying!! I would like to fix it but I'm not sure what to change.