'88 90q: a/c floods the floor

[Andrei Kogan <abk@phy.duke.edu>]

Hello,

We are getting flooded when we turn on the A/C for longer than 15 min. When
we stop the car, I don't see any water dripping onto the ground, so I am
assuming that the draings are clogged. Has anybody tried to deal with this?
How do I get to the drains, do I go in  from under the car or do I need to
remove the dash to get to the water collection pan? Is the A/C geometry on
80/90 model similar to a 4000 --- I have a 4000 Benteley but not the 80/90.  
(My archive shows that Dan Simoes had a similar problem 3 years ago, Dan,
are you there?)

Many thanks ,
Andrei