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Vacuum Tree?

flyhigh5574

Member
Joined
January 15, 2005
Messages
31
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City, State
Minot AFB, ND
Year, Model & Trim Level
91 Navajo
I just took the intake manifold off, or at least I am guessing that it was the intake manifold, has the IAC mounted on it and I guess the 'vacuum tree' in the back. I was wondering, I removed and labeled all of the hoses that I took off so I would know where they go but I have no idea what their function is. There are two with what looks like a small copper wire in them. Also, there is one flexible hose that goes to a small metal tube that extends down the firewall to somewhere around the transmission/oil pan. Can anyone shed some light on what these are? Thanks guys.
 






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