Window fogging

Kneale Brownson knotnook at
Thu Dec 12 08:16:57 EST 2002

Do you have water pooling in the area under the rain diverter because of a
plugged main drain?  That could be supplying the moisture your air intake
obviously is getting.

At 11:56 AM 12/12/2002 +0100, Eyvind Spangen wrote:
>Now in the winter, the windows in my '86 100q is fogging. I have to
>keep the fan on a high setting and defrost, and even then, the
>windshield is fogging. The side windows are somewhat better, but the
>rear window will be foggy if I don't use the defroster.
>This is an Euro model, no AC, so no recirculation flap that can
>break/jam. The coolant level is stable and I can't smell any coolant
>inside the car. I have cleaned the air intake under the plastic cover.
>I've tried cleaning the windows with alcohol, didn't help. Tried some
>"Rain-X" treatment that should reduce fogging - it helped somewhat,
>but not much.
>I've checked under the carpets - dry.. I've tried driving with a
>window cracked open - no difference.
>Any good tips?
>E. Spangen
>'86 Audi 100 2.2 CS quattro

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