Question about 1997 Ford Expedition
The rear fan/ blower motor may have died before you got the vehicle. if it worked for you at one time, the blower usually makes noise before biting the dust, so you can check fuses and relays, as well.
Posted on Jun 07, 2015
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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
Item Part Number Description 1 — Air inlet door 2 — Temperature blend door 3 — Headliner airflow 4 — Auxiliary mode door 5 — Floor airflow 6 18476 Heater core 7 19860 Evaporator core 8 19805 Blower motor
The auxiliary A/C and heating system has the following features:
I would say the auxiliary mode door (#4) electric motor is not wokring.
Auxiliary Blend Door Actuator —Air Distribution Removal and Installation
Posted on Mar 01, 2009
TRY JUMPING THE BLOWER MOTOR APPLY 12 VOLTS TO THE MOTOR IF IT STARTS THEN THE PROBLEM WOULD BE THE SWITCH IF IT DOES NOT START THEN THE MOTOR IS THE PROBLEM GOOD LUCK HOPE THIS HELPS
Posted on Jun 25, 2009
I had the same problem and found that the vacuum tube located behind the battery was cut. The tube is about the size of an ink tube inside a ball point pen. The size is 5/32" and can be purchased at most auto parts stores. A quick splice and you will be back to cooling.
Posted on Jul 05, 2009
you have a vacuum loss to the ac control head, the motors that divert air are vacuum operated, if you loose vacuum the system goes to defrost for safety reasons, the vacuum comes from the engine, then goes o a plastic vacuum tank under the hook start there, it is a 3/16 id hose.
Posted on Aug 14, 2009
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