97 Grand Caravan SE (AWD), 135,000 miles, 3.8L V6 MFI. Recent servicing includes New Transmission, new radiator, new water pump, new brake lines, new A/C compressor, new starter, new tires, oil change less than 1500 miles, air filter and plugs.

I have water leaking into the front passenger compartment (Drivers side is dry). It is not just a little water, it is a healthy stream that soaks the entire passenger compartment carpet. I found that the "water tray" underneath the windshield was clogged with leaves and dirt. Cleaned and flushed the tray and drain lines. I am still getting water in the van. Everytime I hit the brakes or go down a hill, water starts running down the front passenger floor board. It seems to be coming from the heater box. I am wondering if there is a fresh-air vent/door in there somewhere that could be stuck open or if there is some kind of air intake for the A/C and heating sytem that is letting the water in and if so where do I start looking? Do I have to take the heater box completely out? Do I have to remove the dash? What is the best way to approach this problem.

Sounds like the drain for the A/C evapotator is cloged. Look on the firewall engine side passenger for the outlet.

there is a tsb to install a evap drain tube also reseal the tube area with rtv to ensure

I had the same problem with my 97 T&C. There is a drain hose that gets clogged. It runs down from the wiper area to under the car on the passenger side. Clean it out with a wire hanger from the bottom.

I had the same problem with my 97 T&C. There is a drain hose that gets clogged. It runs down from the wiper area to under the car on the passenger side. Clean it out with a wire hanger from the bottom.

After looking at mine today, I realize I was thinking of a different car(above). The T&C lines don't go all the way to the bottom, they dead end on a chassis rail. To clean them just pull them off under the wiper cowl area and run water through them with a hose to make sure they are not clogged.