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1997 Ford Explorer Question: heater blows cold air

 

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Visitor, 4.0L V6 SOHC, Pottstown, PA, December 10, 2010, 22:11

when i turn heat on no heat just cold air

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  • Answer #1

    DaveJHM December 10, 2010, 22:45
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     Master

    There are multiple reasons you could be getting no heat. First, the engine may not be getting warm enough fast enough. This could be from a faulty thermostat - sticking open. Second, the heater core may not have flow. You might have a hot hose going in, but a cold one coming out. This could be from a restriction. Third, you may have a temperature blend door motor in the dash failed.

    Testing is in order to determine your failure. Good luck!

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    Visitor, January 22, 2011, 09:44

    Where is the blend door motor located

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    DaveJHM, January 22, 2011, 22:09
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    Behind the dash, on the heater plenum assembly itself. The dash must be removed to have access to it.

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