Wet Floor in Passenger Foot Area

I have posted this on another topic thread but haven't solved problem yet. Anyone run into this and figured out problem? This is on an 03 Reg Cab 2WD w/Auto trans. Has air but haven't turned it on although have been running heater.

 

Check the drain tubes for the a/c evaporator

 

Whow....Thanks Scott this will give me several causes to check out

 

Leaves in the drain for the high pressure area just below the base of the windshield...my old Nissan did this every year

 

OK it is probably a stopped up drain line, but can someone tell me where the drain is. In other threads some have said it is on the firewall , others have said it is in the passenger wheel well.....I don't see it in either place...HELP.

 

The drain holes for the high pressure area are in each back corner of the lower part, I just shot a water hose in there and it in clogged em, now holes in the ac drain I'm not sure, but my hood is open outside give me a sec

OK here is the ac drain, it sticks out front fire wall, that's my finger on it, the second is the hole that the water from windshield run off drains out of, one on each side

 

I just realized your in MO in winter, why are you running ac? Or does it come on with defrost to dry air?

 

Not running any A/C, not even running the defrost but I am running the heater directed towards the feet area. Someone said the A/C runs when you run the defrost but I haven't even turned it on to see what happens......still get wet passenger floorboard.
Clay thanks for the pics, I'll check those area tomorrow but I don't see how I could have missed the tube you are pointing too. I wonder if my 03 is like your 14?

 

If your not using defrost or ac, and you said you been getting lots of rain....I would put a water hose on the windshield and sit in truck and see if you could see it drip somewhere...then you would know for sure!

 

Clay....haven't had any rain for several weeks, but I may try this just to rule it out...Thanks.

 

OK its not the drain tube....stuck wire in there and blew it out, nothing, no water draining. It hasn't rained here or snowed, so not a windshield seal leak or cowl drain plugged up with leaves. Anybody got any other ideas??

 

Leaking heater core?

Coolant level stable or adding some along the way?

 

This^.

I forgot all about that sob. I hope 8ts not though, they are a bitch to change