Brake issues

[mikesz]

FYI, First gen cars are prone to waterlogged brake boosters. I had similar problem with my 99. I have a Tip and noticed there was no "creep" at stoplights. Prior to 2000 the cars had a 2 piece bellows that connected the brake rod from pedal to booster. The part that the rod goes through allows water to get in and corrodes the inner part of the booster rendering it useless. I was lucky I have heard some people have the opposite problem, No stopping and back up into things. Easiest way to check is to pop off the vacuum line to the brake booster in the frunk and stick your finger in try to find the water level or something that will absorb water to see if that is the problem.

[ALEX SOL]

have 2000 boxster S and will be looking closely at the booster and Master cylinder.
they are 20 yrs old so possible it's time to replace.. watched a number of videos and can't believe the design allows water to seep in... planning to pull the mc and booster and replace with new, bleed and hope that solve my issue..

that issue being, i was driving about 55 mph and the rear brakes starting clamping without me even on the brakes... pulled of the highway and lucky was able to get close to plaza though stuck in middle of road...

cooled down about 20 mins and drove home... no issues

drove again after a week and same problem and brakes no letting go..

only weird thing i did was pull the car out of winter storage after about eight weeks no driving... previous last drive was through a snow storm so may took in some moisture or salt... the boxster performed well with snow tires and about 4-6 inches of accumulation in about 3hrs... then got to rainy wet area so had some water or road salt mixed in, parked it eight weeks, pull it out of storage this problems shows up