My heater will work fine, then all the sudden it will go cool, then warm, then cool. And after 20-30 minutes of driving it the temperature hand for the motor shoots up to Hot, then it will drop, then go right back up to Hot. If u rev the engine the heat hand goes down automatically and quickly. There is no check engine light at all-ever. If you turn the car off and get out, you can hear the fan running trying to cool the car down. Some say head gasket is blown, but no check engine light at all, and it takes 20-30 minutes of driving before it does it. Please help!
What makes this problem better or worse?
Driving for 20 minutes
How long has your 2016 Kia Sorento had this problem?
RepairPal Certified shops can diagnose and repair your 2016 Kia Sorento. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, it sounds like you could have a problem with engine cooling, such as with the thermostat or cooling fans. It's all totally guesswork until hands on testing is performed. Not all concerns will set diagnostic trouble codes to be reviewed for clues. Your Kia should have a powertrain warranty until 60,000 miles at least -- even 100,000 miles for original new vehicle owners. Seek guidance from your local Kia dealership if you fall under those limits. Otherwise, seek the guidance of a trusted shop near you.
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