Black Foam from Dash Vent 2004 996

[rrcgrb]

Second owner of a 2004 996 4s Cab and have noticed black bits of foam coming through my dash vents. Is this from a deteriorating cabin filter or something else? If it is the cabin filter, is it easily replaced?

[Orient Express]

This foam is coming from the climate control outside air door that is located under the cabin filter in the cowl. Over time the foam deteriorates and gets sucked into the cabin by the HVAC fan and is blown into the cabin. Some cars have a white foam that turns yellow over time, and some cars have black foam. This happens to most cars that have this flapper door that is exposed to the elements.

[rrcgrb]

Much Appreciate the input.....

[rwrsmart]

Have the same model and year and this started 6 months ago ~ happy new year! Our cars are a decade old! Recently changed the pollen filter and saw the deterioration.

No worries, slows down and stops over 6 months depending on car use but at least the car doesn't slow down! If its a weekend driver it may take a couple years. You wont notice the difference once the foam bits stop....

Enjoy the ride!

rwrsmart

[hi8ha]

Here is how to fix the problem:

http://www.renntech.org/forums/tutorials/article/121-fixed-my-lack-of-heat-problem-here-is-the-procedure/

I did it and worked fine.

Edited January 6, 2014 by hi8ha