On your car, I believe that you can remove the blower motor resistor
pack, you should see it bolted into the hvac case under the hood.  This
will allow you to look at the evap core fins and see if they are plugged.
Then, I'm pretty sure that you can take out whatever bolts/screws are
handy on the drivers side of the hvac sheet metal box where it bolts
to the firewall and lift the box away from the firewall an inch or so.
This will allow you to use something like engine shampoo to loosen
the crap, and then you can hose off the fins.  Just put some towels
inside the car, in case the a/c moisture vent is plugged.  I've done
them this way many times, and you can get the original air flow
back without having to take the evap core out.

Ian