Originally Posted by simmo300e

And, I know these are probably stupid questions, but have you:

checked the fluid level?
looked for evidence of leaks on the garage floor?
changed fluid recently?

You don't say how long you've had the car but it's old enough to seriously consider overhauling all your hydraulic systems. One of the first things I did when I bought my car was change all the rubber brake lines and change the fluid. Its worthwhile servicing the master cylinders as well because the seals will give up eventually, and they start leaking when hot. New units aren't expensive but you can also strip them down and replace the seals yourself if you're that way inclined.

A 20 year old car, you should probably think about replacing all the fuel and water hoses as well while you're at it. save yourself a lot of grief later on.

good luck