"Bob Shuman" <reshuman@[EMAIL PROTECTED]
> wrote in message
news:47b4521f$1@[EMAIL PROTECTED]
> Aarcuda,
> Glenn,
> Philthy,
>
> I did the simple dash vent temperature measurement and wanted to post
the
> results. The outside ambient air temperature this morning on the drive
to
> work was 20 degrees F and when I arrived at work and with the engine and
> compartment fully warmed, the exhaust air temperature got up to 152
degrees
> F using a HVAC probe type thermometer inserted about 5" into the
dashboard
> vane and the blower on medium speed setting.
I dont think it is a heat thing, something is not pulling out the moisture
or keeping it inside the vehicle
>
> I also attempted to actuate the A/C and listened for the air compressor
to
> cycle on, but it did not come on, but I suspect this is because the
outside
> temperature is below the low temp cutout limit. (The A/C worked fine
over
> the Summer and Fall.)
Instead of listening, pop the hood and see if the compressor kicks on. And
just because it comes on does not mean it has a good charge.
>
> Lastly, I tried to see if there was any noticeable difference in the
> exhausted air speed or the sound when I had the blower on the highest
> setting and moved the control knob between the standard dash setting and
the
> "recirculated dash" setting, but on both settings I could not tell any
> difference. This has me thinking that this may be the most fruitful
theory
> to explore further at this time.
You should be able to tell. A noticeable differecne will occur when
allowing
recirc on and off. Possibly a door or motor problem. Scann tool may be
needed
>
> Perhaps this is a calibration issue resulting from the battery
replacement
> at a temperature below 50 degrees F as Glenn has suggested? Glenn,
would
> this re-calibration procedure (waiting till temperature is above 50
degrees
> F, then removing the battery cable, waiting 10 minutes, reconnecting,
and
> then running the vehicle for 10 minutes at idle) impact the
recirculation
> door setting or is there some other thing you suggest that I can check?
It is a calibration test of the doors. Suggest Scan tool connection
>
> In closing, I was also asked by Philthy to do one additional test and
that
> was to crack open the windows while they were fogging. I made a 40 mile
> drive last night and tried this, but at 70+ MPH, all this seemed to do
was
> cool down the car and cause the side windows to freeze up sooner. By
the
> way, it was clear that even with the heat control at maximum setting,
blower
> on full at highest speed, and with the full defroster setting, the
faster
I
> drove the worse the problem became. This tells me that the wind speed
> increases the cooling on the wind****eld and side windows, and that the
> humidity is probably never getting exhausted from the cabin, so just
> saturates and constantly re-condenses on the cold windows. In worst
case,
> it actually then freezes solid making visibility impossible. I finally
> found that barely popping open my moon roof to allow the hot air to vent
> made the cabin temp more tolerable and maybe even helped a little with
> getting some of the trapped moisture out of the car.
My 2 cents worth, you have a leak in the system and this is not allowing
the
moisture to be removed from the car or the recirc door is inop. Your next
step would be scan tool/ A/C manifold gauge connected to verify properly
charged a/c system
>
> Thanks again to everyone for the great troubleshooting tips, at this
point
I
> am optimistic that this is the cause. Thanks also in advance for any
> additional pointers on how to troubleshoot the recirculation door on
this
> base model 2.7L 2001 Intrepid SE.
>
> Bob
>
> "philthy" <dbrider@[EMAIL PROTECTED]
> wrote in message
> news:47B39BB9.75939F0@[EMAIL PROTECTED]
> > you might look at the floor mates for the moisture source try drivng
with
> > the
> > windows cracked and see if that helps remove the fog
> > the ac system works when the defrost is on to dehumidify the air in
the
> > car and
> > there is a good chance your ac is inop from a failed evap.coil does
the
ac
> > compressor cycle?? when turned on?
> >
> > Bob Shuman wrote:
> >
> >> I have a 2001 2.7L Dodge Intrepid SE (base model w/69K miles) that
has
> >> been
> >> very reliable and served me well, but I am experiencing a "problem"
and
> >> would appreciate others thoughts.
> >>
> >> When the outside temperature is cold (and I will define cold here to
mean
> >> somewhere below 10-15 degrees F), if I try to set the air outlet
control
> >> to
> >> the heater position (even when the car is 100% warmed up), then all
of
> >> the
> >> windows in the car (this includes the rear window, side windows, and
the
> >> front wid****eld) fog up (and will actually freeze) making visibility
> >> impossible. The only solution is to run the defroster 100% of the
time
> >> and
> >> even then, if it is extremely cold (like it is today with the
temperature
> >> f -6 degrees F on my way into work), then the side windows will
still
> >> freeze up even with the defroster blowing hot air at full force.
> >>
> >> I've attempted to clean the windows thoroughly without any change in
this
> >> condition and also tried to look for any possible source for the
water
> >> va****, but also without success. The engine coolant level is normal
and
> >> is
> >> not leaking. The coolant temperature gauge goes to the
normal/mid-scale
> >> position when the car warms up (5-10 minutes) and the outlet control
and
> >> blower speed both seem to work properly since air comes out of the
> >> appropriate outlet dependent on the knob position. The Air
Conditioner
> >> also
> >> works perfectly and the compressor clutch engages on warmer days when
the
> >> defroster position is selected.
> >>
> >> At this point I am at a loss to explain this behavior and would
> >> appreciate
> >> knowing if other Intrepid owners experience the same issue or if
someone
> >> has
> >> any idea on what I can look for to see where this moisture comes
from.
> >> (I
> >> know some of it comes from breathing, but this has NEVER been a
problem
> >> with
> >> any other vehicles and they generally carry more passengers than I do
in
> >> this car. Thanks in advance for all thoughts.
> >>
> >> Bob
> >>
> >>
> >
>
>
|
