Kia Troubleshooting Questions? Ask a Mechanic
Welcome, I'm Chris and independent contractor that helps customers here.
Can you get the vehicle to operating temp, with the engine running and the heat commanded on, open the hood and carefully grab the heater core hoses. They should be about 170-200 degrees? Then set the temp to cold and turn on the AC, are the evaporator lines also at the firewall freezing cold? If you get both of those results then we need to diagnose the blend door actuator inside the dash.
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