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Old 08-29-2013, 01:58 AM   #48
fistpoint
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Join Date: Dec 2011
Drives: Supercharged Golf Cart
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Quote:
Originally Posted by andrew20195 View Post
It should be noted that this car does not have a heater valve, so when your engine is at operating temperature, there is hot coolant circulating through the heater core at all times. If you aren't using a/c, and the air mix door isn't at full cold, you will definitely get some warm air.
Is it really that simple of an explanation? So those of us who have not experienced this on our previous vehicles must have had heater valves?

Is this something that can be added or would that constitute a whole new system?
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If we add Mike the Snake's comment about his previous vehicles not blowing at all when fan is set to off, then we have 3 distinct variations of vehicles HVAC systems:

1) no air leaks in when fan is off
2) air "leaks in when fan is off, but temp is relatively equal to outside air
3) air leaks in when fan is off, temp is hotter than outside air
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