[CRR_1987_911_GR]

As I was driving home on the freeway today, I started hearing a squealing noise coming from the right front of my car (a 1987 911 Carrera), which then would stop upon lightly touching the brakes, but would return about 10 min later. The brakes themselves seemed to be working fine, until the moment I went to pull into my driveway, at which time I applied the brakes and the pedal went all the way to the floor. A quick release and pump of the pedal and the brakes were back, thankfully. When I got out of the car, I put my hand up to each of the wheels and the right front was definitely hot. What I’m wondering is if there could have been some air in the right front brake line that was causing the caliper to rub and this generated heat exacerbating the problem, or if there is another more serious problem. Right now I’m considering replacing the brake fluid to see if this solves the problem. Any other things I might want to look for?

Thanks for the help!