Question about 2003 Ford Focus

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Heater blows cool air

Heater only blows cool air, worked great last winter

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Check the heater hoses at the firewall where they go into the heater core, see if they are hot, if they are the blend door in the air ducts is the problem, if they are not the thermostat is stuck open and engine is running cold.
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Posted on Nov 02, 2008

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