window fogging issue

[thebeast]

Im new to the forum and to forums in general so please be patient with me.

I have a 72 charger.  I am having major trouble seeing whenever it rains due to my windows
fogging up.  They fog instantly and when wiped immediately refog.  My defrost blows but the air
doesnt really change temperature and only has affect on a very small area of the windshield.

My question is, do i have an issue with my windows not being sealed or is that normal in these cars
and i need to get my ac fixed?  I have limited funds right now so i am trying to tackle this problem as
efficiently as possible.

Thanks so much for any help!

[Ghoste]

One thing to check might be that the hoses running from the heater box to the vent are in good shape and then making sure the selector for the air door is properly adjusted so that max airflow is getting up there on the defrost mode.

[ACUDANUT]

The easy way would be not to drive a 42 year old classic car in bad weather.  Another option is rain-x.  Inside and out.

[thebeast]

Thanks Ghoste, i will try and check those things. 

Acudanut, i get what you are saying about not driving it in the rain.  Unfortunately my family is
down two vehicles right now so i need it as a daily driver.  Plus i know when these cars were made
they could handle driving in rain.  So there is a solution out there.  Might be beyond my current
financial ability, but theres a reason for this issue.  I will try rain-x too.  Thanks!

[Cooter]

"The Beast"....Yes, there WAS a solution and it was when the DEFROST button was pushed the A/C ran like in most newer cars blowing SUPER DRY air up on the glass..Without A/C, your urinating in the wind.

[resq302]

If you don't have A/C like I don't in my car, you just have to warm up the inside of the car to the point it will keep the glass warm so it won't fog.   Other wise, you will have to do whatever you can to keep the inside temps the same as the outside which would prevent fogging also.  May need to drive with a vent window open to equalize the temps inside the car to the outside temps.  Fog is essentially condensing water to a cooler surface.  Your solution is either to dry (using the a/c) the air, equalizing the temps in the car to what it is outside, or (and this might take a while) getting the temps inside the car higher than what it is outside so anything would condense on the outside of the car and you can use your wipers to clear it away.

[squeakfinder]

  Is your heater core even hooked up? Are there heater hose's running from the engine to the firewall?

[squeakfinder]

    The other thing I wonder about is the heater control valve. Or the cable going to it. Being that you mentioned the temperature doesn't change much.

           


      http://www.dodgecharger.com/forum/index.php/topic,10802.0.html

[thebeast]

Wow, awesome info.  I will check all this out later.  Thanks so much.

[thebeast]

Is the picture below the heater control valve?  And should there be something going into these in the second picture?

[doctor4766]

That second pic is of the A/C lines into the cabin.

[resq302]

yup, you got an a/c car with the missing a/c components!

[thebeast]

So what are the hoses going  in the first picture?

[jar1292]

that would be your heater core.

[A383Wing]

maybe heater core has a small leak? Same thing happened to my Dodge Shadow.....turns out the heater core was leaking....now no more fogging windows

Bryan

[thebeast]

So is the rusty thing in the hose in the first picture the heater control valve? 

[Charger RT]

So is the rusty thing in the hose in the first picture the heater control valve? 

yes and it looks like the cable is missing to change the valve position.
Tim

[resq302]

Well, all that the heater core shut off does is stops the coolant from circulating through the heater core when you have the A/C on.  Kinda defeats the purpose blowing cold air and then having to go through something that is putting off heat inside the car.  If all of the A/C stuff is removed, there is really no need for the shut off and it can be left on all the time which will act like if it was a non A/C car.

[thebeast]

Great!  I'm going to try turning the shutoff lever and see if I get hot air.

[squeakfinder]

 

     Yeah. Looks like the cable is broke. You could just bypass that valve with a longer hose if it won't open.

[ACUDANUT]

Driving a 42 year old car in wet conditions does nothing but promote and excelate the rust.  You won't have much left of this car in a year or two.  Find a beater and use it.

[472 R/T SE]

You could always just replace that hose completely.  Auto parts store prolly carries the hose, $5 @ the most.

-heater core leaking.  Antifreeze is passing through the inside of your car via the heater core.  If it's bad it's like a water pump in that it'll start leaking (if you're lucky), something broke with my core but I was a block from the house.  By the time I got home I had 2" of antifreeze on the pass. side.
-wiper base letting water in.  Is the carpet wet?  Something is prolly wet.
-something inside the car is wet

If you want you could install some sort of valve to shut the antifreeze off & on.  Shut the water off completely during the summer months.

We live in the NW so it's something that can't happen.  Like Brian said, open a vent window or crack the door windows.