Passenger floor is wet

2002 Voyager with front passenger carpet wet with white gunk between the
seat and the door. My mother-in-law asked me and I have no clue. Only two
things I can think of: leaking when raining or heater coil. I sprayed a
hose on passenger side door and windshield and observed no leakage. I
checked her drain holes and they were not clogged. Any educated guesses or
answers.

Thanks

 

Another possibility would be that the A/C evaporator drain hose is draining
in to rather than out of the van.

 

White gunk? did someone spill milk in the car?

 

Best guess until garage can work on it is mold. She has no idea how long it
was wet under the floormats

 

2 things to look for...This happened on my caravan..Not long after I bought the
van in 95!

There is a body seam under the windshield wiper panel, that water made it's way
through. The carpet always was saturated after a rain. I placed some of that
waterproof putty over the seam. that stuff is used around roof vent openings
in larger vans, worked like a charm.

Otherwise, there is a little donut that mounts around the evaporator drain.
That may slip or deterorate. Moulding that same putty material around the
drain will work.

Try a high pressure spray at a car wash, around the windshield wiper area, and
the cowl under it. See if the leak is there.

Get that carpet up immediately. Clean and dry the area with a blow drier. Pull
out any saturated carpet padding. replace with new padding of your choice.