Join the 2 loose lines together with a vacuum hose. These hoses loose will cause a vacuum leak that affects shifting. The other lines run the EGR which you are better off just disconnecting, IMHO. The temp sender and 2 valves on the valve cover all do the EGR. Pull a vacuum on the EGR with a mitivac or equiv, look at the valve stem. It should move. If it does you can leave it like that, if it's stuck, you should fix it.

__________________
'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.