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1994 Buick LeSabre Question: why does the heater only blow cold air,motor is working and switch is on hot,

 

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bob jones, Yuba City, CA, January 14, 2013, 19:50
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when the heater controll is switched on heat, what opens the water flow to the water heater, is it manual or electrnonic

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  • Answer #1

    January 14, 2013, 20:52
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     Master

    Sounds like the blend door is not opening to the heater core... Either broken blend door or blend door actuator. Need to find out which. Is the engine temp. getting up to regular operating temperatures?

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