AC recirculate question...
Thread Starter
Racer
Joined: Jun 2005
Posts: 334
Likes: 0
From: Honolulu Hawaii
AC recirculate question...
Last big question for the day, just another one of those things I’ve always meant to ask about 
…
I’ve noticed my AC, even while set to recirculate, brings in a lot of outside fumes… Not so much engine odors from my Z but more ambient smells, say like when a bus passes, etc., or worse (like a sewage plant
). Also when the flow direction is set to “face & floor”, for lack of a better term, some cold air flows from the window defrost area often creating a condensation spot on the windscreen during our humid Hawaiian days. When cycling the recirculate switch I do hear the flap (?) opening and closing and there is a difference in the volume of airflow & temperature.
So is this a normal thing, anyone else experience something similar? I’m not too concerned I guess, just curious. Worse case I’ll have the dealership take a look as it’s still under warranty.
TIA & Mahalo!!!
Mark
…I’ve noticed my AC, even while set to recirculate, brings in a lot of outside fumes… Not so much engine odors from my Z but more ambient smells, say like when a bus passes, etc., or worse (like a sewage plant
). Also when the flow direction is set to “face & floor”, for lack of a better term, some cold air flows from the window defrost area often creating a condensation spot on the windscreen during our humid Hawaiian days. When cycling the recirculate switch I do hear the flap (?) opening and closing and there is a difference in the volume of airflow & temperature.So is this a normal thing, anyone else experience something similar? I’m not too concerned I guess, just curious. Worse case I’ll have the dealership take a look as it’s still under warranty.
TIA & Mahalo!!!
Mark
Tech Contributor
Joined: Oct 1999
Posts: 41,032
Likes: 9,790
From: Charlotte, NC (formerly Endicott, NY)
Depends on what you mean by a lot. Recirculate does not mean all the air is recirculated since that could be dangerous if there was an exhaust leak into the passenger cabin. They usually only recirculate 80% of the air.
Bill
Bill
Thread Starter
Racer
Joined: Jun 2005
Posts: 334
Likes: 0
From: Honolulu Hawaii
I'm gonna claim ignorance here, I didn't realize that fact... It makes sense, so I'm guessing its working as it should. In the situations when I do smell something from outside it’s generally something pretty extreme, like the sewage plant example (we have one on base I pass from time-to-time). Sometimes that 20% is still pretty pungent stuff!
Appreciate the help & thanks for squaring me away on this one
Mahalo!!!
Mark
