I had a problem with my brakes. I went to put on the brakes and the pedal almost went to the floor. I released the brake and pushed again and then they were normal. The next time I went to put on the brakes, the same thing happened. The weather was a little rainy. I drove the car home (30 miles) and never had another problem. The master cylinder was replaced 2 months ago because they couldnt get the air out when bleeding the brakes.