The foam comes from the air/mix door in the heat/AC system. I posted a link to a
site where it was explained how to fix this problem. You have to go down through
the area below the battery to reach it.
The door looks like swiss cheese, it has holes in it. The holes are exposed when the
foam distintegrates and comes through the vents. Seems to be more of a problem
on southern area cars. Heat/humidity??
I'm going to have to make the repair on my car too! Fix is easy, getting to the door
is a bit of a hassle.
If I can find the site again I'll post it here. I printed it off just in case the site went away.
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