Re: '03 Expedition Front AC not working
Yes check the fuses behind the passenger kick panel. Look at fuse 116 (30 amp) and see if it's blown. That is your front blower fuse. If that fuse is not blown see if the blower will work in any of the selectable speeds. If not, either your speed control relay is toast or the blower motor has burned out. You can see and access all these items by removing the glove box. Simply open the glovebox, squeeze the stop tabs on either side inward so that the glovebox is allowed to fall open, then remove the 3 small bolts that attach the hinge area. The speed control box (Auto Climate Control) is that matchbox size thing attached to the side of the airbox that you first see right behind the glovebox. Further back you will see the interior inlet for the front A/C intake. The motor must be running for the flapper door to shut (i.e. switch to interior/recycle cabin air). It defaults to the open/outside air position when the engine is shut off (loss of vacuum). If you've never cleaned the interior air inlet you will find it covered with dust build up. A cabin air filter would've been a great design feature for these trucks, but Ford's logic went the Yugo way on that one. The blower motor itself is just unbolted from below. If you hear/see that that blower motor is actually working but you're not getting any airflow out of the vents check the supply vacuum line under the hood (passengerside near the firewall). Make sure that little vacuum line didn't pop off or it will kill your dash vents. Let us know what you find.