Last night the clutch pedal on my 03 went to the floor and stayed there. I know that can be various things like the linkage or a slave. However, I was able to pop it back up, and now all seems to be well. I'm guessing this will happen again, but I'm curious if my symptoms might indicate something specific?

 

Low fluid?

 

Check the lines for leaks. Sounds like something not holding pressure.