Sean, I appreciate your reply and apologize for the delay with my response. Lately, I've been juggling quite a few mechanical and repair issues with the 318, more specifically, the sunroof, air flow meter and, of course, the ongoing A/C debacle. I'm currently driving the car without the use of any air circulation whatsoever, for it seems the car is unable to blow even fresh air through the vents.
I'm grateful for your advice and don't discount the recommendation you've provided but I thought I'd try some other options before taking the car to a technician. Considering what you've advised, I can only assume that a trained and certified technician can perform any A/C related repairs. So, being the stubborn (and cheap) SOB that I am, I figured I'd do some research before relinquishing the reigns over to a mechanic. In doing so, I have discovered that some of the previously mentioned anomalies that the car's cooling system have exhibited are quite common for the E36. In fact, there are a few websites claiming that the 'Heater and A/C Control Head', aka 'Climate Control Head' or 'CCU' may be the culprit.
Opting out of repairing the original unit itself (which I understand is a rather easy fix if you know what you're doing), I managed to find a similar pre-owned rotary-knob head taken from a '94 325 at a reasonable price online. I decided that to be completely thorough, a check of all fuses and relays associated with the climate control system was in order. Those turned out fine. Unfortunately, following the installation of the '94 CCU the only noticeable difference is that the A/C, recirculation, and defrost indicator lights now glow accordingly. Still no actual airflow being forced through the vents. Another curious aspect is that the compressor seems to be having difficulty spinning?!?
I realize this further illustrates the strength of your argument that the evaporator has a hole in it. Before I venture off to the mechanic however, is there any possibility that the problem is related to the Blower Motor? I read an article on a website (http://www.dvatp.com/bmw/diy/hvac_blower/
) that suggests that this may be another potential answer to this ongoing dilemma. Thanks for your time and patience.