[Shop-talk] extremely window fogging

[Randall]

Only takes a very small leak to humidify the interior, and glycol antifreeze
won't evaporate as easily as water.  So it might still be a heater leak.

But I would also crawl around and feel for damp carpet.  You might have
rainwater getting in some way and then evaporating.

I had a VW Rabbit once that leaked at the bottom of the windshield on the
drivers side.  It was always fogging up, even in the just sort of coolish
weather we get around here.  I only found it because the water had ruined
the fuel pump relay.

-- Randall 

> -----Original Message-----
> From: Shop-talk [mailto:shop-talk-bounces at autox.team.net] On Behalf Of
> Tim .
> Sent: Tuesday, January 02, 2018 12:44 PM
> To: Shop Talk
> Subject: [Shop-talk] extremely window fogging
> 
> My DD is a 99 toyota solara. When it gets cold, the windows fog up
> extremely bad. The windscreen is almost impossible to keep clear with the
> blower on high and the heat maxed out. The blower seems to be running fine
> with great air movement. With these below zero temperatures, if I am on
> the road for over a half hour, the windscreen just about becomes fogged up
> to make it impossible to drive.
> 
> 
> 
> 
> I thought that maybe I had a heater core leak but the radiator is full and
> the overflow tank is only a little low under the cold line. Also, the
> windows are icey, not greasy as one would might expect with a heater core
> leak.
> 
> 
> 
> 
> So two questions:
> 
> 
> 
> 
> If it was a heater core leak, wouldn't it be plainly obvious by looking at
> the coolant levels?
> 
> 
> 
> 
> Does anyone have any suggestions on what I can do to combat this?
> 
> 
> 
> 
> Thanks
> 
> tim