Horrible smell after turning A/C off

BrandonT

This is a well known issue and frankly Nissan should be embarrassed. I know I am if I smell it with a passenger Anyway the best thing I have found if you don't want to mess with turning the AC on and off all the time is to keep the temp a click or two above 75F. It will switch back and forth between recirc and fresh by itself and this seems to help minimize it.

Mt Tam I am

Is it possible to spray an anti mold compound into or on something?

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SouthArk370Z

The most popular fungicides are bleach and vinegar, both of which can attack the Aluminum parts of the system (bleach attacks just about everything). Some kind of Silver micro/nano-particle spray around the evaporator area might help.

There may be a restriction in the drain. Kink/dirt/mold in the hose, &c.

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chops

this isnt an issue thats specific to nissan. it affects every single car. if you turn the AC on, the cool air condenses within the air ducts and will eventually mold. the way to solve it is to simply turn off the AC and let it blow outside air for a few minutes before coming to your destination. ive maintained this method ever since ive gotten my Z and my AC has never smelled bad.

if you already have the moldy smell, then i would suggest blowing the heater on the highest setting for upto 30minutes. just roll your windows down and drive around for a while. it should kill or get rid of the funk.

this affects every single car that uses AC. how do i know? i valeted cars for popular country clubs and what not for a year or so. every single car had an initially terrible smelling AC