water

[CloverLeafFarm]

well i walked outside this morning at it was about 45 degrees, so i drove 30 minutes to work with the heat pointed down at my feet, the temp. dial was only 1/2 way down the red, the fan was on the second speed, and after i got done and parked the truck it was fine, however i came back 2 hours later and there was a puddle of water probably 12" in diameter dripping from under neath my passenger front fender-well, there was even condensation under neath my passenger floor mat, is the drain plugged or what

[Peppy]

hate to say it but that sounds like your heater core or valve is leaking

[CloverLeafFarm]

are you sure i just don't have a core line that would be plugged or crimped

[sikktruk01]

water or antifreeze ?

[NCHornet]

I would start by checking the drain line. I have yet to see a heater core go out on a 7.3 but that doesn't mean it can't be, if it was the heater core it would be anti freeze not water!! Do you have a bad smell, and I mean bad, coming through the vents.

NCH

[CSIPSD]

Sounds like normal condensation coming off the defrost.

[CloverLeafFarm]

the dripping is water and not antifreeze, which line is the drain,

[NCHornet]

The drain is up inside the pass fender well turn the AC on for a few minutes and follow the water, defrost condensation shouldn't be getting the floorboard wet!!

NCH