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Mildew smell after using A/C

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Old Jul 16, 2006 | 02:35 PM
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Default Mildew smell after using A/C

I have a mildew smell and not sure where it is coming from, Carpet on passenger side is not wet either. If the drain tube was clogged, which is common wouldnt i get a back up somewhere?
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Old Jul 16, 2006 | 03:07 PM
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I have a '98 and I'm getting the same smell...I'll be interested in the answers you get.
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Old Jul 16, 2006 | 03:24 PM
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I just pulled the a/c drain tube and it was just fine, not clogged or anything. I wen ahead and snipped the restrictive outlet to aviod future problems while i was at it. I Still have a mildew smell and cant find any wet spot or moisture on the inside or carpet. Any ideas guys??
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Old Jul 16, 2006 | 03:32 PM
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To get rid of the smell I used some lysol sprayed down a cardboard tube into the vent in front of the driver side window on the outside of the car. That seemed to kill the mildew I had.

To prevent the smell, turn off your A/C several minutes before parking and let the fan run high, that will help blow the moisture out of the vents.

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Old Jul 16, 2006 | 04:07 PM
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Thanks for the input Jim.. So the moisture build up is in the vents and do all C5's have this problem. I was more concerned about the electronics getting wet and having electrical problems. Thanks again
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Old Jul 16, 2006 | 04:18 PM
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They make air conditioner cleaners that you spray into the air intake duct (under your hood) to solve this. There is also a kit that the dealer can install, it runs the fan after you turn off your car to dry out the air conditioner moisture.

Good luck !
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Old Jul 16, 2006 | 04:24 PM
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Originally Posted by David426
Thanks for the input Jim.. So the moisture build up is in the vents and do all C5's have this problem. I was more concerned about the electronics getting wet and having electrical problems. Thanks again

Not just C5 all cars with AC have this problem.
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Old Jul 16, 2006 | 06:55 PM
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Thanks from me too.
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Old Jul 16, 2006 | 11:27 PM
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A simple solution that has worked for me for over 20 years. I turn the AC off, but allow the fan to blow a couple of minutes before I reach my destination. It seems to clear the ducts of any moisture collection. I've never had the smell problem since...
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Old Jul 17, 2006 | 04:11 AM
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Originally Posted by craig04c5
Not just C5 all cars with AC have this problem.
The problem occures on most AC systems. Condenstaion build up in the system. One of the main contributing factors is when the system is run in closed loop mode (vents closed, recirculating air mode) Unless your going through a big cloud of smoke or dust ect. ect. keep the system vents open to the outside. This works in places like CA. For those of you that live in state's that have >95% humidity ????
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Old Jul 17, 2006 | 08:01 AM
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Originally Posted by dudleyd
The problem occures on most AC systems. Condenstaion build up in the system. One of the main contributing factors is when the system is run in closed loop mode (vents closed, recirculating air mode) Unless your going through a big cloud of smoke or dust ect. ect. keep the system vents open to the outside. This works in places like CA. For those of you that live in state's that have >95% humidity ????
I disagree. Moisture condenses out when you lower the air below the dew point. By recirculating the same air, you are attempting to remove the moisture from already dried air, so less condensate is removed as time goes on. What I do here in HUMID Florida is run the system closed, at least near the end of my drive, then run the fan on recirculate with the A/C off for the last couple of miles. This warms up the condenser so it stops trying to condense water out of the air and dries it with dehumidified air. None of my cars have had any smell problems in my 27 years in Florida.
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