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2006 Sorento - Heater blows cold air

12K views 4 replies 3 participants last post by  Thistle 
#1 ·
I have a 2006 Sorento LX with auto climate system. When I have the heater blowing, everything seems fine when I'm doing highway speeds, but if I'm in stop and go traffic (or idling) the fan starts blowing cold air. This happens regardless of whether the system is set to "auto" or not.
I don't know if the problem is that a mixer door is allowing more outside air to come in, or if the heater core suddenly has colder fluid in it.
Any thoughts on the problem, solutions, or testing would be appreciated.
 
#5 ·
I don't know how it got so low. I don't see any leaks, or puddles on the ground. (And nothing strange in the oil or exhaust smoke) There was still fluid in the tank, but it was quite a bit down from the fill lines. (Which are very hard to see on my truck.)
 
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