Brake problems

[nicklinderman]

I have a 1995 oldsmobile lss non-supercharged, and I was pulling from a driveway when suddenly the vehical started to loose power and the front brakes completly locked up. I shut it off and turned the vehical back on and the brakes released. I then proceed to drive and about 2 minutes later the vehical did the same exact thing but this time all four brakes locked up. Does anyone know why it would do that?

[maxwedge]

Welcome to AF. Bad master cylinder, contaminated brake fluid swelled the pistons in the M/C, power brake booster also.