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Why would only warm air blow from the front heater of a 1999 Ford Expedition with climate control?
Wiki User
∙ 8y ago
I have the same issue, sounds like a blend door problem. Could be up to 800.00 to fix it....My 1999 Expy would blow out cool air if I played with the controls, now I only have hot air. The rear air works fine when changing the temps
you may also try the heater valve which is under the hood , the heater hoses hook to it .. i have a 99 expy with a 5.4 and my front and rear heat were dramatically fdiff. in heat neither were hot .. i changed the heater valve and waalaa .. now 16 degrees 15 mins snow melts off my windshield .. u ...
Wiki User
∙ 8y ago
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no heat front defrost dsah.
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There are two heater core hose that goes to the firewall the inlet and outlet. through that hose, you will also have the rear heater core hose attached to a T joint in both the inlet and outlet hose. You splice the hose of the front heater core inlet and connect that to the rear heater core inlet hose. Same goes to the Outlet hose with the T joint using a conncetor which you can buy at your auto parts store, 3/4 inch size. Basically you are bypassing the front heater core that is connected to the firewall. You wont have any defroster and heater for the front, but the rear vents and control will have heat.
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