Heater will not get hot

Tiny
SRMOORE
  • MEMBER
  • 2006 KIA SORENTO
  • 70,000 MILES
My car is the LX model. Heater does not get hot.
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Saturday, October 15th, 2011 AT 9:16 AM

1 Reply

Tiny
WRENCHER1
  • EXPERT
With the engine at full operating temperature, locate the two heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If not too hot to hold, then you have to look at the actual engine temperature and if that is up, if it is, then your looking at a restricted heater core.
If you find that they are both too hot to hold, then the heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
If they are both not too hot to hold on to, then you either have a restricted heater core or the system is not completely full and getting air pockets for some reason.
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Saturday, October 15th, 2011 AT 10:00 AM

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