A/C Flooding me out

Kneale Brownson knotnook at traverse.com
Fri Jul 19 14:32:37 EDT 2002

There is a small drain tube plumbed into the bottom of the evaporator box
that's supposed to drain the evap box.  The bottom of the evap box has a
regular pattern of drains that lead to the tube.  That drain pokes through
the sheetmetal in the HVAC space beneath the rain diverter  just a few
inches toward the passenger side of the car from the larger drain for the
entire HVAC space that you describe in your "roto-rooting".    There's no
way I can see to clear the small drain unless you can find its terminus
somewhere above the tranny and toward the passenger side, I'd guess, and
then maybe use air pressure to blow into it.   The larger drain is just a
rubber grommet that has a lower molded end that squeezes together in normal
conditions but will expand to the size of its upper opening if pushed
upon.  It's only maybe three inches long, so if you've poked something into
it, it should be clear.  It's right on top of the tranny, I believe, so you
may be poking thru and reaching the top of the tranny, making it seem that
the drain has an obstruction.  Is water standing in the bottom of the HVAC
area?  If not,  the water you're getting may be collecting in the evap box
and overflowing through the recirculation door above the glove compartment
box.  That door will be open during A/C use so the A/C is working on
already cooled air from the cabin instead of hot air from outside.  If the
evap box is icing up, you have some other problem I have no understanding of.

At 11:47 AM 07/19/2002 -0500, mallick at mail.utexas.edu wrote:

>Well, not really flooding me out, but I am shipping a bit of water into the
>passenger compartment.  I've tried roto-rooting the drain line, but there's a
>Y-connection in there that indicates that it drains from two different
>locations.  To get around the Y I need to put the car on jack stands and try
>The weird thing is that when I park the car, water drains like crazy from the
>A/C on the underside...including a location where there is no drain hose.  I
>never had this problem in upstate NY, but now that I'm down here in Texas, the
>A/C gets a real workout.
>Any ideas?  Can I get to things from inside?
>Thanks in advance,
>John Mallick
>200q20v, 148K
>200q20v mailing list
>200q20v at audifans.com

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