2001 Windstar air only through defrost, found this. PIC included - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

FoamieOmie · 04-22-2012, 14:41

So I know alot of people have problems with the vents and the default setting of defrost if the vacuum is problematic. While searching for a bad hose or leak I found this nozzle coming out of the passenger side firewall that seems to need a hose but I can't find one without a home anywhere. It may just be hidden or gone all together. It seems to be right where everyone says to look for it so I was wondering if something should be attached to this and if so, what? My mechanic said loss of vacuum MIGHT also be why the van stutters when in drive at stops while its cold (fine after it warms up) and why it revs real high when I start it up. He said it was a possibility but wasn't sure. It even revs a little when I turn the wheel and even if I just touch the pedal. Any ideas as to what needs to be attached here? (My hand is on the left holding a flashlight in the pic so that's not part of the van haha)

**Bert** · 04-23-2012, 20:33

Can't see it good enough to tell but it may be the drain for the plenum and that would be normal. I don't have mine anymore to check. I'd be looking at the smaller hoses that attach to the intake and follow them until one goes throught the firewall.

FoamieOmie · 04-24-2012, 05:17

I think you may be right as I found the disconnected vacuum hose after taking the cowls off and getting back there to see what was loose. The black line (smaller than I thought) was disconnected from the what I assume is the vacuum. A cylinder back there. I guess when someone was doing work on it they knocked it loose because it would be easy to do as its on there kind of weak. Anyone who has similar problems should try this approach. Takes 1/2 hour at most. I now have all the vents working right in front (rear vents were fine before) and it even seems to help with some rough idling I was having but still too sure to tell. Does the computer need to figure out that before it totally fixes anything?

**Bert** · 04-24-2012, 07:30

The computer usually learns that part right away. Give it another day or two and see if it gets better. You could have Autozone check for any codes. Thanks for the update on the HVAC.

jartsihart · 04-28-2012, 23:45

That sounds like a vacuum leak... Check all those vacuum hoses ... There´s a vacuum reservoir - its one point to leak... there should be a little backpressure valve in t-line connector --change it ...

Check those hoses from diagram, and then you see that those are working correctly...