mechanic brakes go to the floor while stop at red light or stop sign, mechanic can't find out what the problem is, and I am still making payments on the car, can not make payments and fix the problem also. nobody seems to know what is causing the problem, I went to Sears and got an oil change and my brakes been going to the floor ever since, sears didn't cause the problem, and nobody knows what is causing the brake pedal to go to the floor.