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Umm I was just messing with those hoses today. I have two large leaks off of the pcv.
Im not sure off hand on the red one but I do have a hose running off of it. Ill check tomorrow to see where it goes. As for the blue cap I have a hose running from there to right beside my thermostat. From the looks of it at the thermostat end looks to be coolant running in it and was hot to the touch.
I didn't get to the junk yard this weekend like I wanted to. Hopefully they have a 5.4 I can look at. My neighbor has a 97 Expedition, but it's a 4.6 so I don't know how similar, if at all, their motor would be.
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