Ill check on the hoses after work. What does this vacuum controlled Flo valve loom like? Ill check that also after work. I did my injectors in may. Last winter... my truck would blow hot air at idle. So I'm assuming its something I did. The only thing I mess with is I unplugged the AC compressor. And I noticed that little grey tube wasn't hooked up, so I hooked it up to the little black box above the valve cover.