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Fogged Windows #729299
October 26th 2017 8:14 am
October 26th 2017 8:14 am
Joined: Jan 2014
Posts: 1
MA
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0h2me Offline OP
stranger
0h2me  Offline OP
stranger
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Joined: Jan 2014
Posts: 1
MA
Hi all,
I took, or should I say I tried to, take my 77 E-250 (460 4 barrel), to work this morning, It was about 54 degrees and raining. A little on the humid side.
She started fine, and off we go. Turned on the defrost, and all that would come out is hot humid air. Had to keep wiping the windshield. Not once in awhile but constantly, non stop.
The blower was not drying the windows, but just coating them with fog, so I finally had to park it
What would cause this to happen? The van had AC at one time, but not now. There is plenty of air flow from the (windshield), vents.

Thanks for any input.

Re: Fogged Windows [Re: 0h2me] #729306
October 26th 2017 9:45 am
October 26th 2017 9:45 am
Joined: Nov 2013
Posts: 963
West Texas
W
Wedgy Offline
old hand
Wedgy  Offline
old hand
W
Joined: Nov 2013
Posts: 963
West Texas
Hey Oh2me,

Welcome to the site!

Just spitballing here, but, heater core leaking? Airbox drain plugged? Water penetration into the airbox or ducts? Maybe the Ford guys have a better idea?

Bummer about the AC, sounds like it would surely help in your climate.

We know the defroster sucks, but will it do burnouts?


"Who New? Blue"
1990 Chevy G30 454
Church Van, maternity division

"Old Blue"
1988 Dodge B250

"Cabin Cruiser"
'94 Dodge B350 www.xplorermotorhome.com/
Xplorer MH model 230 230 hp MPI 360 LA Wedgy OD auto

Old vans never really die if we chose to let them live
Re: Fogged Windows [Re: 0h2me] #729310
October 26th 2017 10:47 am
October 26th 2017 10:47 am
Joined: Aug 2001
Posts: 11,652
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,652
Fircrest, WA
Working AC would definitely help this situation since the C system also functioned as an air dryer and de-humidifier. I have had multiple 75-91 Ford vans and none of them had any window fogging issues even though I live in western Washington where I get plenty of rain and it does get down to the teens in the winter.

You most likely have a failed firewall seal or weatherstrippping seal that is letting in too much moisture. As has been mentioned, a failing heater core can also cause the windshield to fog up. You want to get that looked at because having a heater core failure while you are driving is not fun at all. I had it happen to me in my 89 Ford van earlier this year. Pretty amazing smoke show in the cab.


Windows- they're what make a van worth owning!
Re: Fogged Windows [Re: 0h2me] #729311
October 26th 2017 11:11 am
October 26th 2017 11:11 am
Joined: Jun 2010
Posts: 13,420
Van Diego California
frscke1 Offline
frscke1  Offline

Joined: Jun 2010
Posts: 13,420
Van Diego California
Welcome to the site Oh2me ...


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'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB

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