Ventilation and A/C system smell. Poor drainage?

[b-man]

I have a 2002 c2 coupe (that I have owned since new for the last few years). I have recently noticed a musty smell from the ventilation and air conditioning system. My guess is that there is some type of moisture or condensation accumulating somewhere in the system because it's not draining properly. Of course, I could be completely wrong. But, what are the most common problem areas and easiest areas to check to see if there is blockage?

I am assuming the pollen filter is fine.

Thank you for your responses.

b-man

Edited March 3, 2004 by b-man

[Dr. T]

If you haven't changed the pollen filter since new you'll be amazed at how filthy it is. This is probably all it needs.

-Glen

[b-man]

Dr. T, I have actually changed the pollen filter several times.

b-man

[Loren]

Two things to try...

1. Find the A/C condensation drain tube under the car and pass a stiff wire through it to make sure it is not plugged. Also, have a look at the drain just the left of the battery (in the front trunk) and make sure it is not blocked either.

2. To get rid of the current odor... get the car fully warmed up (or hot even) then open all the windows and turn the heater up all the way (blower as low as it will go). This heat will kill the stuff growing in there. I tried this on my wife's Jeep when the A/C condensation drain on it plugged and it worked pretty well.

If you live in a humid area then try shutting the A/C off a mile so from home so the condensation has a chance to evaporate before the car sits in the garage all night.

Good Luck! :beer:

[b-man]

"1. Find the A/C condensation drain tube under the car and pass a stiff wire through it to make sure it is not plugged. Also, have a look at the drain just the left of the battery (in the front trunk) and make sure it is not blocked either."

Can you give me a hint of where the drain tube would be once I get under the car? I assume it is a small, thin flexible plastic hose?

When you say "left of the battery", you mean the *driver's* left, not my left as I stand there in front of the car when looking at the battery, correct?

Thanks.

b-man

[Loren]

Sorry I was not clear.

The drain tube (usually a rubber hose) should be right under the firewall or just a little further back towards the center of the car.

Yeah, I meant passenger side of the battery.

[Loren]

Found an image for ya...

[b-man]

That's a big help. Thanks again Loren.

b-man