Hi Steve! Hope all is good with you! I'll keep that in mind but I do have a pretty good guy just down the street from where I work that would be able to work on it for me. I'm also going to the dealer sometime next week for my 30,000 mile screwing so maybe they'll have time to check it out if I don't fix it this weekend.

 

I will put my money on the oil cooler pluged and egr close to falure if not already. Pull you egr valve and see if it is damp in the intake manifold, if so get ready for repair. Do you have a water filter on the truck?

 

Update: Rain finally stopped long enough to do some checking. I think the heater system itself is working. After warming up the truck I found that the heater hose with the solenoid gets plenty hot! So that leads me to believe that hot water is flowing. I then took out the glove box and starting checking around the heater core. The water lines leading into the box were very hot! Hot enough to burn! (don't ask me how I found out!) So that leads me to think the heater core itself is ok and getting hot. All this made me think the heating system is ok.

Now I turned my attention to the blend door control. Turns out this is a plastic box about 3x4 with a motor, control board and wheel inside. There is a plastic pole that goes down into the heater box that controls the blend door. A bunch of checking in a very painful bent position (me) I found that this system doesn't seem to be working. I took the control box out and apart. When working the dash temp control nothing is moving inside this box. So I took it apart and use it's control rod by hand. Turns out I could move the blend door by hand and go from cool to hot air! Looks like now it's either this little motor box that's bad or something from the dash control to the box. I'll see if I can replace this control box first and go from there.

Hopefully this will be my problem and an easy fix! All those coolers and stuff sure were sounding mighty expensive! I'll keep you posted!

Any comments or suggestions are still appreciated! Jim.

 

The actuator might be vacuum controlled.

 

I read on a forum, don't remember which one, about the same thing, i.e. heat blend door, but I think it was for an Expedition or Explorer. Something about the electric motor in the blend door accuator turning in the wheel that moves the wheel. I think the lower part of the wheel, shaft, cracks and allows the motor shaft to turn without turning the wheel. Hope this makes sense. I'll try to remember which site and post it. Ian BTW the blend door is spring loaded I think to revert to closed or cold thats why no heat.

 

Try this, not our vehicle, but it may help. Or just google expedition heater blend door repair. I read this is fairly common on those trucks.
YouTube - Ford Explorer 02-08 HeaterTreater blend door repair video
Ian

 

Holy cow Ian!! That video makes my repair look like a piece of cake! lol! Sure glad I didn't have to do all of that.

Mine is controlled by an electric motor in a box behind the glove box door. Not easy to get to but I did manage last night. I have the new box in place and it seems to be working. I'll head out for a drive in a little while and see if it works. Cross your fingers everyone!

 

Ya, I read somewhwre that it is a pain in the a.. on those trucks but is actually easy on thensuperduties. I am a member of the excursion board and that is where I think I saw it refrenced. Ian

 

Hi everyone! Last update. Or at least the last one since I knocked my computer off the table and it doesn't work anymore!

Looks like the heater is fixed! Tried it out this morning and got nice and hot air in the cab! I'll go out on a limb here and call it fixed!! It did turn out to be that darn electric heater blend door controller. Why in the world they would replace the cables of old with this fancy new piece of junk is beyond me but for now I have heat and I'm happy!

So I want give a big hearty THANKS! to everyone on here for all their valuable input!! Without you guys I think I'd still be driving around freezing my lugnuts off!! So THANKS to you all!!!

Now if I could only figure out how to fix my computer! lol! Jim.

 

Good to hear Jim, well the computer is another subject.....

 

Glad you got if fixed. No one likes frozen lug nuts.