Bob Shuman wrote:
> I will check the condensate drain as Deke suggested, but had not been
> experiencing any issues over the summer when the AC ran regularly and
there
> was always a puddle of water under the front passenger side of the
vehicle.
>
> With every other vehicle I have ever owned, I have been able to use the
> "heat" (floor outlet) or vent (dash outlet) settings, even in super-cold
> weather. Occasionally I might need to run the defroster or select a
setting
> that provided a mix of both floor and defrost to clear the wind****eld,
but
> this car is completely different! If I even attempt to turn the control
> knob to any other setting other than full defrost mode, my wind****eld
and
> side windows frost over and I lose visibility. In addition, no matter
how
> long I run the defroster when it is really cold outside (below zero F),
even
> to the point where the front wind****eld and both side front windows are
> completely clear, and it is actually uncomfortable because it is so warm
in
> the car, the rear windows will still stay completely frosted over. I
can
> run the electric rear window defogger and this clears the rear window so
> there is visibility, but the rear side windows just never seem to clear
up
> at all.
>
> I really think that there must be some other source for this moisture,
but I
> simply can't find it! If it is not the coolant, and not from the
> passengers, and not already in the trapped air in the vehicle (which is
also
> sub-zero so should be very dry), then where does it come from? By the
way,
> it has done this since I've owned it (4 years), but only gets really
> annoying when the temperatures dip to around zero F. Unfortunately,
this
> winter is just plain cold so it is worse than it has been the last few
> years. As additional info. I'm getting ready to hand down this vehicle
to
> my son this Spring and would like to solve this permanently so that he
does
> not have this trouble next winter.
>
> Bob
>
> "aarcuda69062" <nonelson@[EMAIL PROTECTED]
> wrote in message
> news:nonelson-206B3D.07074512022008@[EMAIL PROTECTED]
>> In article <61dachF1t3vvcU1@[EMAIL PROTECTED]
>,
>> Bill Putney <bptn@[EMAIL PROTECTED]
> wrote:
>>
>>> Bob Shuman wrote:
>>>> Bill,
>>>>
>>>> As always, thanks for your thoughts...
>>> Thanks, Bob.
>>>
>>>> Only when the setting is moved to defrost and after the wind****eld
and
>>>> side
>>>> windows warm sufficiently does the condensation stop and I get
regular
>>>> visibility.
>>> I'm thinking that that sentence is the key to your problem. You need
to
>>> put it in defrost from the start. No - there won't be any heat at
that
>>> point, but the a.c. will run to pull moisture out of the air - that's
>>> how it is designed to work. You're not allowing the system to do its
>>> job.
>>>
>>> Glenn - others - aren't I right on that?
>> Yup.
>> No different than how my 98 was behaving on Sunday when
>> temperatures were similar. (-9)
>> Got to warm the wind****eld enough that inside moisture doesn't
>> condense, you can switch to dash vents and aim the two outboard
>> ones at the side windows but then the wind****eld starts to fog up.
>> Lot of square inches to the LH wind****eld...
>
>
At those temperatures the condensate may be freezing in the drain
and causing a backup.
It sounds to me like condensate is the most likely culprit.
Have you checked under the floor mats to ensure you don't have
excess moisture there?
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