the first thing i would do is check the clutch master cylinder, see if its dry. its on the firewall drivers side it looks like a smaller brake master cylinder. if its dry put brake fluid in it and look down toward the trans from the under the hood of the car and you should see a bleeder valve on there. open it (8mm wrench) and pour some fluid in there and just let it gravity bleed and keep flushing fluid through there. second thing would be change the trans fluid. try both and see if the problem goes away