Posted on Dec 18, 2008

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Heater only blows cold air

Heater fan only blows cold air, but the temperature guage still shows the heat rising. Does this automatically rule out the thermostat? If not, what else could the problem be?

1 Answer

Thomas F. Schneider

Master 2,715 Answers
Posted on Dec 18, 2008

Thomas F. Schneider

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Yes,it rules it out. The valve leading the water into the heater core is not opening or the door that put the air past or through the heater core is closed. This is general information not specific to your particular model.

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