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The heater oly blows cold air. Coolant level is good. I have…

Customer Question
The heater oly blows...

The heater oly blows cold air.

Mechanic's Assistant: Have you checked to make sure the thermostat is working? What about the coolant level?

Coolant level is good. I have not checked the thermostat. If the thermostat is not working wouldn't my car over heat?

Mechanic's Assistant: What is the model/year of your Kia?

Rio

Mechanic's Assistant: What year is your Rio?

2004

Mechanic's Assistant: Are you fixing your Rio yourself? What have you tried so far?

I will do the repairs. I have only checked the coolant level. The heater stopped working from only morning to the next.

Submitted: 7 months ago.Category: Kia
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Answered in 3 minutes by:
11/21/2017
Kia Mechanic: Ron, ASE Certified Technician  replied 7 months ago
Ron
Ron, ASE Certified Technician
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Satisfied Customers: 38,579
Experience: 35 years as an automotive tech
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Kia Mechanic: Ron, ASE Certified Technician  replied 7 months ago

Usually if the thermostat was stuck closed you would have an over heating concern. If the thermostat is stuck open then the engine would not over heat and that can effect heater performance as well. Before you consider the thermostat being bad start your engine and let it warm up to normal operating temp and then go out under the hood with the engine running and the heater on and place your hands in both heater hose at the firewall where they connect to the heater core and see if both hose are to hot to hold and let me know what you find .

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