Rain + a/c running = fogged up windows!!!!

[JH32552]

The a/c in my 94 Camry still works fine, albeit a little warmer than I would like. I will be recharging the system soon, but would like to address an issue I have been having the last few years. If it's raining, and I run the a/c, all the windows fog up. What is the issue so I can fix it before refilling the system?

If it's a part, I hope it's a cheap one! LOL!!!!

Thanks guys!
Jackie :-)

[brcidd]

In the two cases I have seen of this complaint- it was always between 50 and 60 degrees out, rainy, and the recirc door was stuck open.

Defroster needs fresh air to properly defog the windows. So with that in mind, exercise your recirculation door, it should be opening and shutting, and you can hear the air flow difference as it works- other than that watch to see if it moves, or actuator is working. I have also tied them shut on folks who don't wish to buy a new actuator motor. Probably have to pull glove box out to access it.

[Brian R.]

If the fogging is occurring on the outside of the windows, then your inside temperature is too cold and you need to add some warm air to the A/C output. If the fogging is on the inside, it may be that your A/C is not operating well enough to remove the moisture from the air, or your A/C drain is partially plugged and you are getting water inside and wetting the carpet. Check your passenger side carpet to see if it is wet. The drain can be blown out from underneath with compressed air, gently.

[JH32552]

Originally Posted by brcidd

In the two cases I have seen of this complaint- it was always between 50 and 60 degrees out, rainy, and the recirc door was stuck open.

Defroster needs fresh air to properly defog the windows. So with that in mind, exercise your recirculation door, it should be opening and shutting, and you can hear the air flow difference as it works- other than that watch to see if it moves, or actuator is working. I have also tied them shut on folks who don't wish to buy a new actuator motor. Probably have to pull glove box out to access it.

The recirculation door operates fine with a very audible whooooosh when you exercise it. This fogging only happens when it's hot out, the a/c is on, and it's raining. I actually have to pull over, turn the air off, turn on the heat and defrosters to clear the windows. It's actually dangerous and happens rather quickly.

[JH32552]

Originally Posted by Brian R.

If the fogging is occurring on the outside of the windows, then your inside temperature is too cold and you need to add some warm air to the A/C output. If the fogging is on the inside, it may be that your A/C is not operating well enough to remove the moisture from the air, or your A/C drain is partially plugged and you are getting water inside and wetting the carpet. Check your passenger side carpet to see if it is wet. The drain can be blown out from underneath with compressed air, gently.

Hi Brian!

The moisture of on the inside of the glass. I've never noticed the carpet wet, but will definitely check that out today after I run the a/c. Seems to me, someone mentioned evaporator or a dryer or something a few years ago when having this same problem. But, maybe it just needs more freon... I have no clue! LOL!!! (that's why I am asking you guys! )

Jackie

[JH32552]

FYI:

I topped off the refrigerant and she is blowing icy cold air again! YAYYYY! However, I haven't been driving in the rain yet to see if the windows are still fogging up. I'll post when I do! (keeping fingers crossed!)

Jackie

[somick]

I used to have the similar conditions when my heater core got a hole in it. Check out your coolant level.

Good luck,
Sam

[JH32552]

Originally Posted by somick

I used to have the similar conditions when my heater core got a hole in it. Check out your coolant level.

Good luck,
Sam

Thanks, Sam! I'll check that out! :-)