Originally Posted by sstroud
Even if the HVAC is off water can still collect in the blower and leak through to the floor or you may have a leak in the seal under your windshield and the high pressure is enough to force water through. notice a lot of fogging in that corner on humid days?
No fogging even when raining (and not even using the defroster or compressor).
This leaking only happens when running the AC with air flow directed to floor via "Floor Only, "Bi-Level front vents/floor" or "Defroster Bi-Level Winshield/Floor" within a day after a vigorus drive-through car wash.
However, if I drive around after a carwash with flow directed to the front vents only or to the Defrostor Windshield only (again with AC compressor running) it does NOT drop water down behind the right side front kick panel by the front passenger door .... weird .... huh?
If I drive around for about a week without directing any chilled air flow to the floor via the 3 possible modes, then there no water intrusion regardless of where I direct chilled air after that. Seems that whatever water had accumulated during the carwash must have evaporated during that time (or maybe dribbled away slowly so it was not noticeably damp at the carpet.
BTW, there are no leaks in the rains regardless of how I use the HVAC ducts or AC compressor (as long as I have not recently washed the vehicle). I leave it parked outside in the PacNW where it does rain a lot.
My guess is I need to just start washing the vehicle myself for a while and see what happens