2004 Ford Expedition - Vacuum Lines?
WRONG IMAGE ATTACHED FIRST TIME
So no air from the main front vents. I've looked on here and other sites trying
to track down the culprit. All vac lines "look" good. I have no way to test
vacuum. I did find one oddity - pictured. I can't seem to find anywhere that this
line would go - no open plugs or hanging hoses. Is this supposed to look like
this or does the hose go somewhere? It's gotta go somewhere - it can't be a
drain or the infamous "extra hose." I greatly appreciate any help you can
provide. Have a great weekend.
Nevermind. BUT - if you have a 2004 Expedition (or others I suppose), I found the problem. Of course, it wasn't behind or even near the battery/box like most people have talked about. I followed one of the vac lines over just past the throttle body. Sure enough - there was a broken elbow. Replaced that (and the 1/4 piece to the left of it for fun) and the vents work perfectly. I hope this helps someone out.
I have a 2004 Expedition 4x4 also except mine is an XLT and while replacing my valve cover gasket I found the same tiny hose connected to nothing and I don’t remember undoing any hoses that small so I was wondering if maybe that’s the breather tube for the front differential