I have a 2004 Expedition Eddie Bauer we bought recently and my wife has been complaining that the heat just doesn't seem hot. I drove it and it's odd because sometimes it will get hotter than other times. Also the AC doesn't seem to be as cold as it should be. I checked the coolant and it was fine. I checked both inlet and outlet heater core hoses and they are hot so I am at a loss of what it could be. I was thinking the blend door may have been broke or stuck but I can change the temp on the dash and it does change temp when I raise or lower the temp albeit not as much as it should. If I have the heat set on 90 and kick on the ac compressor the temp coming out of the vents gets cooler as well. Is this supposed to be isolated from the heater core and the blend door so it doesn't affect the heat?we got our first cold snap and she is on my butt to fix it.

Any ideas would be greatly appreciated.

 

One thing I notice is that when I have it on high blow and heat I get very little air through the vents as opposed to high blow cool. I also hear a lot of wind noise under the dash while on heat. Not so much while on cool and it blows hard on cool. I also noticed that the heat in the rear is HOT like it should be. Could the heater core be externally clogged with trash preventing the air from blowing across the coils? That would explain the poor heating and the lack of air though the vents. This vehicle lived outside and was always parked under trees when not being driven. Is there a way to look at the heater core without pulling the dash?

 

Do a search here for the broken blend door issue...very common. To fix it the entire dash has to come out which is a full day's work. The alternative is the Heater Treater repair.
http://heatertreater.net/ford-expedi...fubum4fi7fof34