I have a 2001 Mitsubishi Eclipse. I have cold air blowing out of the driver side

Hello, You said water gets on the floorboard when the A/C is in use. That is likely a clogged drain for the A/C evaporator core case. It picks up condensation as it removes moisture from the air in the vehicle. Locate the drain (tons of pictures and videos for all types of vehicles out there), unclog it, enjoy that part. The other thing, since you have the V6 version, you likely have dual zone climate control. Based on that assumption you have a bad fuse, bad blend door, or bad blend door actuator. The blend door moves back and forth to incrementally block hot or cold air to send the desired temperature to the vent. Want 70 degree air? it blocks most of the hot, and lets in a lot of the cold. Want 85 degree air? it blocks all of the cold and you get all of the hot. There could be a bad fuse for the actuator, which is just a little flat device screwed onto the outside of the ducts, so check the fuse first, then test the actuator before replacing. The heater core would be leaking coolant into the car (OBVIOUS SMELL). If you need guidance and step by steps, the service manual is excellent, and alldatadiy.com is a professional grade resource.