Quote:
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:
Interior vent debris |
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. 
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Last edited by Retroman1969; 01-07-2016 at 07:23 PM.
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