re: problems with '04 Ford Expedition

MJ.. Thanks dude. Appreciate it. I am going to try and limp to the nearest autozone adn get the codes. The hose you are referenciing comes out of the passenger side valve cover , right? I looked at mine and it does not look like it runs to the back of the throttle body. I may be looking at the wrong hose, but it rund behind the throttle body to connects to (I have no idea what) on the fire wal right in front of the drivers side??