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Yes, and it can also make your car to over heat

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12y ago
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Q: Can a bad thermostat cause the heat to blow cold air?
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Related questions

Can a thermostat cause heater in house to blow cold air?

No, not if it's on a heat setting. Most home thermostats have a "Fan" setting that will blow cold air if the attic is cold.


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The heater might blow cold air in a 2000 Silverado because the thermostat is sticking and not changing from cold to heat. The thermostat is usually located in a hose that leads from the radiator to the motor.


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most likely you dont have enough coolant to reach heater core. make sure your full


What would cause your 1997 Ford Aspire heater to blow cold air and never heat up also Temperature gage not to work?

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