Help! Why does my car fog up so badly?

[KiwiBacon]

Oh yeah, a heater core leak is great for fogging up vehicles.

[chimpboy]

Oh yeah, a heater core leak is great for fogging up vehicles.

Or a blocked A/C drain pipe.

I think water is getting into your cabin from somewhere, either a leaky seal somewhere or a/c, heater, etc. It's a bitch but you'll need to track it down.

[macca81]

the only way to dry out a damp car interior (besides a heated garage) is to leave it running with the AC on recirculate for half an hour or so
..................
The worst cars I've been in for condensation are ones where people have left the heater on recirculate, the moisture from people breathing can't get out.

are you contradicting yourself or am i misreading? recirc is the best way to clear it up, but recirc is also the reason for the worse cases of condensation??

[cmarico]

Stop having sex in the car

[KiwiBacon]

the only way to dry out a damp car interior (besides a heated garage) is to leave it running with the AC on recirculate for half an hour or so
..................
The worst cars I've been in for condensation are ones where people have left the heater on recirculate, the moisture from people breathing can't get out.

are you contradicting yourself or am i misreading? recirc is the best way to clear it up, but recirc is also the reason for the worse cases of condensation??

The difference is air conditioning.

AC on recirc actively dries your car out.
Heater on recirc (no AC) prevents moisture getting out.

[mike_nofx]

if its wet carpets, pour bi-carb all over your floors, not just a sprinkle, give it a good covering, make it white!

is this harmful to steel at all? Apparently its not too good on aluminium...

[mhgill]

I've also found for some reason, cars that have been smoked in for years previously seem to fog up more too....

[bender4865]

Old wives tale solution, but it works, any glass, any fog.

Take a dry bar of soap, rub it on the side of the glass that is getting fogged, take a soft cloth and wipe it clean, won't fog for weeks. Repeat when it starts fogging again. I used to have a suzi that had this problem really bad, and this worked when i had to go to work at 4am.

[macca81]

if its wet carpets, pour bi-carb all over your floors, not just a sprinkle, give it a good covering, make it white!

is this harmful to steel at all? Apparently its not too good on aluminium...

they use similer stuff when soda blasting, and that apparently gives the metal a protective coating... and i think it should be fine on aluminium also? alloys might be different

[dudley]

Thanks for the help everyone!
Got lots of things to try.

Cheers

[dudley]

Double post....