I'm having a weird problem with my 2000 Tacoma. It's a manual five speed. Sometimes when I depress the clutch, the clutch pedal stays on the floor. I can pull it back up with the toe of my shoe, but when I depress it again, it falls flat on the floor. I cannot engage the clutch, so I have to start it while in first gear to get it going, then shift without the use of the clutch. I'll let it sit over night, and it works fine the next day. This happens about once every couple of months, and has been going on for a couple of years. It has 726,000+ miles on it