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Ok this cold (-17c) morning I was taking kids to hockey and the van had been running for 10 min with heat set to mix and I felt a steam and then the windows frosted up almost instantly, they were clear.
What I felt was water vapor not coolant, it lasted for about 30 seconds. Enough time for a layer of frost to set on the windows.
The van was driven in 0c dry weather the day before so I am unsure where this steam came from. Anyone have any ideas?
Just a random thought. Ice forming inside the plenum then melting and getting sprayed onto the windshield?
Agreed---condensation from trapped moisture melting, evaporating then collecting on the glass which is the same -17C. (dayum that's COLD! !)
My own E250 takes in excess of 20-30 minutes idling with full heat and blower before its warmed enough to defrost the front compartment windows completely. 10 minutes might not be enough time, especially in those chilly temps.
I drive in these temps all the time and even down to minus -40C, that is when you hear noises of death on cold start-up and hug your van when it gets you home.
I figured it was just ice build up as we went from 0c to -17c in 3 hours.
The only time I have problems with frost on the inside of the windshield and driver/passenger window is when I have a heard of wet/sweaty kids that have been active outside skating or tobogganing and jump in the van covered in snow then unzip and release all the sweat vapor. Then the defrost makes quick work clearing, unlike my old mini-van that took forever!
I don't think I have ever had to wait more than 10 min to clear the windows if there is frost inside after start-up, most times its start and go.
Must be a huge difference in humidity in our areas? Then again I love a warm cabin even if its just the front section---have a curtain between front and rear of my cargo only E250 and never haul wet/sweaty kids!
Your's sounds fine---just one of those short term things---best part was not having that sickening sweet coolant smell!
I drive in these temps all the time and even down to minus -40C, that is when you hear noises of death on cold start-up and hug your van when it gets you home.
I figured it was just ice build up as we went from 0c to -17c in 3 hours.
Props to you, Sir. I would either die or live and become a raging alcoholic drug addict.
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