My 98 Ford Expedition is not getting hot air through out the truck. It blows cold air but not hot. We have changed out the thermostat. The hoses are getting hot, and the heater coal is working! The air is coming out Thur the vents but its only cold in the front and the back. The knob on the from changing the switch from hot to cold is also moving and working properly! Any suggestions?Why is my 98 Ford Expedition is not getting Hot Air?Fords use an electric 'blend door' actuator. Most of the time, the motor and switch work fine but the blend door (inside the plenum) breaks and there is nothing, besides replacement, that will work. First make sure there is nothing wrong with the motor/heat control dial/wires before spending a fortune to replace the plenum.Why is my 98 Ford Expedition is not getting Hot Air?It's a common problem...the heater blend door or the actuator for it is bad.
http://www.fordforum.com/m_18211/tm.htmWhy is my 98 Ford Expedition is not getting Hot Air?the knob is connected to a diverter, mybe that is not channeling the air to the heater CORE.Why is my 98 Ford Expedition is not getting Hot Air?
The blend door is probably stuck on cold
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