Question about 1998 Ford Expedition
If both heater hoses are getting hot, it could be a blend door problem under the dash.
The blend doors direct air thru the heater core and the vents.
Posted on Jan 15, 2013
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Posted on Jan 02, 2017
SOURCE: a/c problem
You either have a bad control, or motor running the air direction door in the front HVAC unit, or a door that is stuck.
The front and rear units are totally separate.
The door directs where the air, cold or hot, should come out, whether it is panel vents, floor, defrost, or any combination of those.
This door and motor are located inside the heater box which usually requires a lot of the vehicle dash assembly to be taken apart to get to these parts.
Posted on Aug 28, 2008
SOURCE: 2000 ford expedition
The heater on your Vehicle it can be a few problems.
I will mention the Importants.
First. Check the temperature, The temperature has to be At least 140 Farenheit.
Second. With a Temperature gace check the temperature of the 2 small hoses going to the Heater core. If the Temperature is almost the same on each of the small hoses, and Close to the temperature of the engine. The circulation is good.
But if only One of the hoses are Hot and the Other no. Is because is there a restriction in the Heater core, and will be nesesary to clean or replace.
Third.. Check the Blend door actuator motor. ( Is the actuator to move from cool to hot air )
Is located at center of the Instrument panel. at lower of the Hvac housing.
Is there behind the Center console.
Ok... Check the step I giving and letme know.
Thank you for use fixya...
Posted on Nov 20, 2008
Make sure the heater core is in the open position by using the shut off valve and turning it to open. next, you may have a malfunction in the direction door the directs the air flow in the dash. a lever may have become lose or separated. may be a bad servo motor not directing the door to move to the heater position. i would start by checking that shut off valve first on the heater core.
Posted on Mar 13, 2009
What doesnt work, the blower motors, or are you not getting cool air back there?
Posted on May 31, 2009
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