Where do these missing vacuum lines go ??

[scoot0073]

Well my 03 EB Expedition 4x4 5.4
The vents on dash never has worked on defrost . It's been this way when I bought it.
So I decided to try n trouble shoot it pulled the climate control from the dash to replace the known orings in the solenoids that I seen on YouTube. But mine doesn't take vacuum lines it's electronic.
So I go under the hood looking for vacuum lines checking for broken/cracked line and I come across these in the pictures.
So thinking these or 1 of them could have something to do with the vents not working..

If I could get someone to find these under the their hood and tell me where they go. Possibly with pictures
Then I can fix mine.
Thanks


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[Bedrck47]

Although you have the EATC controls (electronic) the vent controls are vacuum operated. Your blend doors are electrically operated

 

[scoot0073]

OK but still would like to know what theses connect to I can't find no pictures or information to help me on Google

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[Wilson]

go here to see all the lines:

http://www.fordparts.com

 

[Hamfisted]

Looks like your vacuum SUPPLY line is missing from it's connection. It's the same size as that one that's loose there in your 4th picture. See if you can get it reconnected to that fitting in your 3rd picture. That should help with your lack of vent control.

-Mike

 

[scoot0073]

Thank you so much for taking the picture and your advice :0


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[scoot0073]

Looks like your vacuum SUPPLY line is missing from it's connection. It's the same size as that one that's loose there in your 4th picture. See if you can get it reconnected to that fitting in your 3rd picture. That should help with your lack of vent control.

-Mike

I'll connect picture 3 and 4 together hopefully tomorrow..
Do u have anything connected in picture 1 and 2 ?

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[Hamfisted]

Picture 1 & 2 are not vacuum connections, that's just the hinge and pin for the hot water valve. Leave them alone.

-Mike

 

[scoot0073]

Looks like your vacuum SUPPLY line is missing from it's connection. It's the same size as that one that's loose there in your 4th picture. See if you can get it reconnected to that fitting in your 3rd picture. That should help with your lack of vent control.

-Mike

Could u take a picture of where the vacuum supply line goes into the firewall please.
But yes I don't see that line no where..
Thanks

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[Hamfisted]

The line covered by plastic shroud is the vacuum line TO the hot water valve. The bare vacuum tube is the SUPPLY line TO the EATC vacuum manifold under the dash.

 

[scoot0073]

The line covered by plastic shroud is the vacuum line TO the hot water valve. The bare vacuum tube is the SUPPLY line TO the EATC vacuum manifold under the dash.

Thanks u so much. Yup I don't have the supply line coming out the firewall same place as the hot water vacuum line..
And I bet the dash would have to be pulled to find where it goes and run another line out..
Well I'm not pulling the dash so guess I'll just have to settle with just defrost... Grrrrr

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[Hamfisted]

Well it all ends up at the electronic control manifold there at the front of the center console (under the dash area...). So you could pull the center console out and see if there's anything left of the supply vacuum line. Depending on what you find you might be able to use the hot water valve line to fish some guide string up through the dash grommet. You got nothin to lose at this point. Probably a lot of the original supply line is still there. Maybe even pull the firewall grommet out on the engine bay side and see if you can see the tube, get some needle nose on it and pull enough through to splice the pieces together with a piece of hose?


-Mike

 

[scoot0073]

Well it all ends up at the electronic control manifold there at the front of the center console (under the dash area...). So you could pull the center console out and see if there's anything left of the supply vacuum line. Depending on what you find you might be able to use the hot water valve line to fish some guide string up through the dash grommet. You got nothin to lose at this point. Probably a lot of the original supply line is still there. Maybe even pull the firewall grommet out on the engine bay side and see if you can see the tube, get some needle nose on it and pull enough through to splice the pieces together with a piece of hose?


-Mike

Ok I'm willing to pull the center console . if I can get to the manifold then I can jus run all new line out .
I'll first pull that gourmet out and c if I can see any of the supply line and might get lucky enough to pull enough oout the gourmet to add to it..
Thank u for your time brother

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[Jared allen]

Thanks u so much. Yup I don't have the supply line coming out the firewall same place as the hot water vacuum line..
And I bet the dash would have to be pulled to find where it goes and run another line out..
Well I'm not pulling the dash so guess I'll just have to settle with just defrost... Grrrrr

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In the pic above where does the vaccum line go to that is causing my ac to switch from vent to frost so i was told

 

[scoot0073]

In the pic above where does the vaccum line go to that is causing my ac to switch from vent to frost so i was told

Yes, it's my understanding that the vacuum line control's the actuator blend door in the dash to switch from defrost/vents. Which I don't have I only got defrost.
The other end goes to a black plastic square like hollow canister between the passenger fender and battery.
In my case I don't have the vacuum line coming through the firewall like the picture above so I would have to pull my dash to connect a new line and run it to the vacuum canister behind the battery.

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