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02-05-2010, 04:41

Can anyone help us? Everytime we hit rain the windshield fogs so badly the coach
is undrivable. We wipe them down, the defroster is on (does not help). Seems the
only thing that improves the condition is to turn the airconditioners on all
around to a popcicle temperature and freeze but hey the windshield is clear. I
cant believe they made the coach to run this way, it must be some settings that
we are overlooking. Anyone experience this and find out how to correct it? It is
just so annoying and time consuming.

Thanks in advance for anything that could help us out,
Patty Austin
88 wanderlodge PT40
Tampa FL

02-05-2010, 04:51

Is your dash air working? The a/c is used with the defroster so if its not working, the defrost won't work as well in humid conditions.

Markus

To: WanderlodgeForum@yahoogroups.com
From: patty_austin@...
Date: Fri, 5 Feb 2010 16:41:01 +0000
Subject: [WanderlodgeForum] foggy humid wet windows

Can anyone help us? Everytime we hit rain the windshield fogs so badly the coach is undrivable. We wipe them down, the defroster is on (does not help). Seems the only thing that improves the condition is to turn the airconditioners on all around to a popcicle temperature and freeze but hey the windshield is clear. I cant believe they made the coach to run this way, it must be some settings that we are overlooking. Anyone experience this and find out how to correct it? It is just so annoying and time consuming.

Thanks in advance for anything that could help us out,
Patty Austin
88 wanderlodge PT40
Tampa FL

Hotmail: Trusted email with Microsoftâs powerful SPAM protection. Sign up now.

02-05-2010, 04:59

I have found that when we are in really
humid weather I have to open the fresh air to the heater to help the defrosters
prevent fogging. There is also a possibility that you have a leak in the
heater core. This will cause severe fogging.

- Chuck
Wheeler-

1982 FC 31SB Fort Worth TX

From: WanderlodgeForum@yahoogroups.com [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of patty_austin

Sent: Friday, February 05, 2010
10:41 AM

To: WanderlodgeForum@yahoogroups.com

Subject: [WanderlodgeForum] foggy
humid wet windows

Can anyone help us? Everytime we hit rain the
windshield fogs so badly the coach is undrivable. We wipe them down, the
defroster is on (does not help). Seems the only thing that improves the
condition is to turn the airconditioners on all around to a popcicle
temperature and freeze but hey the windshield is clear. I cant believe they
made the coach to run this way, it must be some settings that we are
overlooking. Anyone experience this and find out how to correct it? It is just
so annoying and time consuming.

Thanks in advance for anything that could help us out,

Patty Austin

88 wanderlodge PT40

Tampa FL

02-05-2010, 05:06

It is not just the windshield it is the entire coach, all windows become so wet they soak the frames at the bottoms. Does this still sound like a heater core leak? How can i tell the difference? Is the fresh air the vents?

Thanks

Patty Austin

88 BB Wanderlodge WBPT40

Tampa Fl

--- On Fri, 2/5/10, Chuck Wheeler wrote:

From: Chuck Wheeler
Subject: RE: [WanderlodgeForum] foggy humid wet windows
To: WanderlodgeForum@yahoogroups.com
Date: Friday, February 5, 2010, 11:59 AM

I have found that when we are in really humid weather I have to open the fresh air to the heater to help the defrosters prevent fogging. There is also a possibility that you have a leak in the heater core. This will cause severe fogging.

- Chuck Wheeler-

1982 FC 31SB Fort Worth TX

From: WanderlodgeForum@yahoogroups.com [mailto: WanderlodgeForum@yahoogroups.com ] On Behalf Of patty_austin
Sent: Friday, February 05, 2010 10:41 AM
To: WanderlodgeForum@yahoogroups.com
Subject: [WanderlodgeForum] foggy humid wet windows

Can anyone help us? Everytime we hit rain the windshield fogs so badly the coach is undrivable. We wipe them down, the defroster is on (does not help). Seems the only thing that improves the condition is to turn the airconditioners on all around to a popcicle temperature and freeze but hey the windshield is clear. I cant believe they made the coach to run this way, it must be some settings that we are overlooking. Anyone experience this and find out how to correct it? It is just so annoying and time consuming.

Thanks in advance for anything that could help us out,
Patty Austin
88 wanderlodge PT40
Tampa FL

02-05-2010, 05:09

Markus is asking you the right question. My understanding is that the defrost/defog setting should activate the dash a/c compressor to de-humidify the air.

Elliot

1995 WLWB 40

RARA AVIS

NW ILLINOIS

-----Original Message-----

From: Markus Meyer

To: wanderlodgeforum@yahoogroups.com

Sent: Fri, Feb 5, 2010 10:51 am

Subject: RE: [WanderlodgeForum] foggy humid wet windows

Is your dash air working? The a/c is used with the defroster so if its not working, the defrost won't work as well in humid conditions.

Markus

To: WanderlodgeForum@yahoogroups.com

From: patty_austin@yahoo.com

Date: Fri, 5 Feb 2010 16:41:01 +0000

Subject: [WanderlodgeForum] foggy humid wet windows

Can anyone help us? Everytime we hit rain the windshield fogs so badly the coach is undrivable. We wipe them down, the defroster is on (does not help). Seems the only thing that improves the condition is to turn the airconditioners on all around to a popcicle temperature and freeze but hey the windshield is clear. I cant believe they made the coach to run this way, it must be some settings that we are overlooking. Anyone experience this and find out how to correct it? It is just so annoying and time consuming.

Thanks in advance for anything that could help us out,

Patty Austin

88 wanderlodge PT40

Tampa FL

Hotmail: Trusted email with MicrosoftÃ¢â¬â¢s powerful SPAM protection. Sign up now.

02-05-2010, 05:22

I don't believe that's physically possible on my coach, and I would be surprised
if it were possible on other older coaches.

The "dash air" isn't dash here. It is overhead. The defrosters come from the
dash heaters. There is no connection between the two.

My defrosters do work fairly well.

Don Bradner
90 PT40 "Blue Thunder"
My location: http://www.bbirdmaps.com/user2.cfm?user=1

On 2/5/2010 at 12:09 PM Elliot wrote:

>Markus is asking you the right question. My understanding is that the
>defrost/defog setting should activate the dash a/c compressor to
>de-humidify the air.
>Elliot
>1995 WLWB 40
>RARA AVIS
>NW ILLINOIS

02-05-2010, 05:26

This is an '88 PT and the controls for the dash air and defrost is separate
systems I believe. The common AC/Heat control was not introduced until the
'90's Coach's. But I could be mistaken on this point.

So warm air inside, glass (inside) cold equals moisture on the inside glass
and fog. So if the glass (inside) is warmer than the cold out side, the
moisture forms on the out side. I have not thought about this since high
school. lol

Is the defrost switch on the lower dash with a front heat on/off switch? I
know the defrost in my FC barely stems the tide of fog on the drivers side,
and not very good until the inside of the windshield warms up. I have
helped it out by switching on the Coach air, fan only, on the overhead to
assist the air moving.

Safe travels,

Ralph and Charolette Fullenwider
"84FC35 "Ruff Diamond"
Duncan, Oklahoma

At 12:09 PM 2/5/2010 -0500, you wrote:

>Markus is asking you the right question. My understanding is that the
>defrost/defog setting should activate the dash a/c compressor to
>de-humidify the air.
>Elliot
>1995 WLWB 40
>RARA AVIS
>NW ILLINOIS
>
>
>
>-----Original Message-----
>From: Markus Meyer
>To: wanderlodgeforum@yahoogroups.com
>Sent: Fri, Feb 5, 2010 10:51 am
>Subject: RE: [WanderlodgeForum] foggy humid wet windows
>
>
>Is your dash air working? The a/c is used with the defroster so if its
>not working, the defrost won't work as well in humid conditions.
>
>Markus
>
>
>----------
>To: WanderlodgeForum@yahoogroups.com
>From: patty_austin@...
>Date: Fri, 5 Feb 2010 16:41:01 +0000
>Subject: [WanderlodgeForum] foggy humid wet windows
>
>
>Can anyone help us? Everytime we hit rain the windshield fogs so badly the
>coach is undrivable. We wipe them down, the defroster is on (does not
>help). Seems the only thing that improves the condition is to turn the
>airconditioners on all around to a popcicle temperature and freeze but hey
>the windshield is clear. I cant believe they made the coach to run this
>way, it must be some settings that we are overlooking. Anyone experience
>this and find out how to correct it? It is just so annoying and time consuming.
>
>Thanks in advance for anything that could help us out,
>Patty Austin
>88 wanderlodge PT40
>Tampa FL
>
>
>

02-05-2010, 05:50

The dash air works great. It freezes us. The defrost is warm air. We have turned on the vents, didn't make a change. We have turned on the dash air, blows great and is cold. we have done various combinations but nothing seems to work except the dehumidifyng use of the AC units that freeze us to death. The best thing we tried is using rainex antifog. But just doesn't seem this should be the fix.

Thanks,

--- On Fri, 2/5/10, Ralph L. Fullenwider wrote:

From: Ralph L. Fullenwider
Subject: Re: [WanderlodgeForum] foggy humid wet windows
To: WanderlodgeForum@yahoogroups.com
Date: Friday, February 5, 2010, 12:26 PM

This is an '88 PT and the controls for the dash air and defrost is separate
systems I believe. The common AC/Heat control was not introduced until the
'90's Coach's. But I could be mistaken on this point.

So warm air inside, glass (inside) cold equals moisture on the inside glass
and fog. So if the glass (inside) is warmer than the cold out side, the
moisture forms on the out side. I have not thought about this since high
school. lol

Is the defrost switch on the lower dash with a front heat on/off switch? I
know the defrost in my FC barely stems the tide of fog on the drivers side,
and not very good until the inside of the windshield warms up. I have
helped it out by switching on the Coach air, fan only, on the overhead to
assist the air moving.

Safe travels,

Ralph and Charolette Fullenwider
"84FC35 "Ruff Diamond"
Duncan, Oklahoma

At 12:09 PM 2/5/2010 -0500,
you wrote:

>Markus is asking you the right question. My understanding is that the
>defrost/defog setting should activate the dash a/c compressor to
>de-humidify the air.
>Elliot
>1995 WLWB 40
>RARA AVIS
>NW ILLINOIS
>
>
>
>-----Original Message-----
>From: Markus Meyer <markusfmeyer@...>
>To: wanderlodgeforum@yahoogroups.com
>Sent: Fri, Feb 5, 2010 10:51 am
>Subject: RE: [WanderlodgeForum] foggy humid wet windows
>
>
>Is your dash air working? The a/c is used with the defroster so if its
>not working, the defrost won't work as well in humid
conditions.
>
>Markus
>
>
>----------
>To: WanderlodgeForum@yahoogroups.com
>From: patty_austin@...
>Date: Fri, 5 Feb 2010 16:41:01 +0000
>Subject: [WanderlodgeForum] foggy humid wet windows
>
>
>Can anyone help us? Everytime we hit rain the windshield fogs so badly the
>coach is undrivable. We wipe them down, the defroster is on (does not
>help). Seems the only thing that improves the condition is to turn the
>airconditioners on all around to a popcicle temperature and freeze but hey
>the windshield is clear. I cant believe they made the coach to run this
>way, it must be some settings that we are overlooking. Anyone
experience
>this and find out how to correct it? It is just so annoying and time consuming.
>
>Thanks in advance for anything that could help us out,
>Patty Austin
>88 wanderlodge PT40
>Tampa FL
>
>
>

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02-05-2010, 06:28

when I say dash air I just mean not rooftop. the defrosters do work but only in the center where the metal frame area, not out at the edges. So we cant see in the mirrors or right in front of us. There is no adjusting any directional flow. It just comes out where it comes out. But it doesnt seem to come out all the way across the vent. Mostly comes out drivers right and passengers mid to left. There is nothing blocking any air movement that we can see. Should we use a combination of ac from above the window plus the defroster? We had both on earlier and seemed to make the situation worse than with just the defroster.

PS it is not humiddue to beingin Florida. We are in Tennessee at present driving in a freezing cold rain.

Thanks, Patty

88 PT40

Tampa, Fl

--- On Fri, 2/5/10, Don Bradner wrote:

From: Don Bradner
Subject: Re: [WanderlodgeForum] foggy humid wet windows
To: WanderlodgeForum@yahoogroups.com
Date: Friday, February 5, 2010, 12:22 PM

I don't believe that's physically possible on my coach, and I would be surprised if it were possible on other older coaches.

The "dash air" isn't dash here. It is overhead. The defrosters come from the dash heaters. There is no connection between the two.

My defrosters do work fairly well.

Don Bradner
90 PT40 "Blue Thunder"
My location: http://www.bbirdmaps.com/user2.cfm?user=1

On 2/5/2010 at 12:09 PM Elliot wrote:

>Markus is asking you the right question. My understanding is that the
>defrost/defog setting should activate the dash a/c compressor to
>de-humidify the air.
>Elliot
>1995 WLWB 40
>RARA AVIS
>NW ILLINOIS

------------------------------------

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02-05-2010, 16:52

When our coach gets saturated with humidity we hook up to 50 amps and run the
air conditioners and the heat together for however long it takes, a couple hours
at least, better yet on and off for a day or two. The excess coach humidity
runs out the AC condensation drains and you are done with if for a while.

A leaking heater core usually makes itself known because the coach starts to
smell like a radiator.

Bob Griesel '84 FC31 WLII WA

--- In WanderlodgeForum@yahoogroups.com, Patty Austin wrote:
>
> It is not just the windshield it is the entire coach, all windows become so
wet they soak the frames at the bottoms. Does this still sound like a heater
core leak? How can i tell the difference? Is the fresh air the vents?
> Thanks
>
> Patty Austin
> 88 BB Wanderlodge WBPT40
> Tampa Fl
>
> --- On Fri, 2/5/10, Chuck Wheeler wrote:
>
>
> From: Chuck Wheeler
> Subject: RE: [WanderlodgeForum] foggy humid wet windows
> To: WanderlodgeForum@yahoogroups.com
> Date: Friday, February 5, 2010, 11:59 AM
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> I have found that when we are in really humid weather I have to open the fresh
air to the heater to help the defrosters prevent fogging. There is also a
possibility that you have a leak in the heater core. This will cause severe
fogging.
>
>
> - Chuck Wheeler-
> 1982 FC 31SB Fort Worth TX
>
>
>
>
> From: WanderlodgeForum@yahoogroups.com [mailto:
WanderlodgeForum@yahoogroups.com ] On Behalf Of patty_austin
> Sent: Friday, February 05, 2010 10:41 AM
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] foggy humid wet windows
>
>
>
>
>
> Can anyone help us? Everytime we hit rain the windshield fogs so badly the
coach is undrivable. We wipe them down, the defroster is on (does not help).
Seems the only thing that improves the condition is to turn the airconditioners
on all around to a popcicle temperature and freeze but hey the windshield is
clear. I cant believe they made the coach to run this way, it must be some
settings that we are overlooking. Anyone experience this and find out how to
correct it? It is just so annoying and time consuming.
>
> Thanks in advance for anything that could help us out,
> Patty Austin
> 88 wanderlodge PT40
> Tampa FL
>