Hi,
I think you're not understanding me. The evaporator housing, aka HVAC CASE, can have a restriction in its' lower drain pipe/tube. I did send you a link to the image. The image is valid and online. SEE ABOVE. At any rate, if there is a clog in the drain pipe, regardless of the drain pipes' location, water can sit in evap housing and leak almost anywhere in front of dash, driver OR passenger side - especially during a turn.. We need to locate the drain and clean it out. The process is:
1) REMOVE carpet from driver's side floor. (near firewall and to right of gas pedal) (note, this drain 'location' does NOT dictate WHERE water weill leak from in front of car!)
2) Access draibn tube and clean if clogged. RETEST
3) If not clogged - remove evap case to inspect foam pad between case and firewall. If mis shapen or damaged, REPLACE.
4) IF ABOVE IS OK - TEST EVAP CASE FOR LEAKS OR CRACKS. IF FOUND - REPLACE EVAP CASE.
That is Mitsubishi's procedure! Right off service manual/tsb. Let me know if you need more info..
FYI - Mitsubishi even has two tsb's on this isuue. One says locate drain and clean and to check the foam pad that sits between drain and firewall.. The other TSB says to clean drain and area then install a cabin/hvac paper filter behind glove box, even if there was none from factory. Because, the hvac housing can be cut to facilitate the filter option.
Master Class
ASE Master Technician
20+ years, full time experience. ASE Master Tech. Specialize in Diagnostics & Electrical