heater not "crispy" enough

[Retroman1969]

Originally Posted by grc0456

Have you noticed any bits of foam blowing out of the vents? This is a common issue on older cars - especially those in the South, I'm told. The mixer flap in your car may have old foam that is deteriorated, leaving open holes that don't separate the hot from cold air - hence the "luke warm' feeling.

This happened to my car that was bought in FL - see this thread:

http://986forum.com/forums/performance-technical-chat/42802-interior-vent-debris-2.html

THIS!

I had that exact issue last winter and that's what it was. The hot and cold air were mixing because the foam insulation that covered the holes in the blend-door-box was shot (gone).
Even more sure of that theory since you are getting blasted with projectile foam.

[CrisZenithBlue]

thanks for the great answers guys! i will read up and give it a shot, i'll clean it up and replace the foam.