In case you guys with the heater problems didn't know, they actually make thermostats with different temp settings, so the thermostat won't open until it's warmer. ( Instead of 185, it will open at 205 ), or something like that. Although going beyond that temp is dangerous, it will create more heat in your heater core lines.
I just did work on a Dodge Caravan that had a high temp thermostat in it, and the heat from those vents was ridiculously warm, almost burnt you when you touched the vents.
Would you look at that? Just look at it, just look at it. What the heck is that? - Ed Bassmaster