Its an "Intake Manifold Tuning Valve" for the Upper intake air plenum, theres an O-Ring behind the valve, you will have to replace that, (VERY VERY VERY SIMPLE JOB DUDE!), <diconnect the negative battery post on the tower on the pass. side on the fire wall, and disconnect the connector from that valve, you will need to slide the red lock on the connector, and then pull gently on the connector, then Just remove the 2 bolts (10mm), pull the valve straight out, and pull off old "O"-Ring, clean area , and valve with a spray (either "Carb+Choke Cleaner"--GUNK---, or break cleaner, ), and dampen the new "O"-ring with a light touch of clean engine oil, install "O"-Ring on to valve then install valve straight foward, and install bolts, lightly tighten both bolts, then re-tighten (not tooo tight-since its a plastic body---BE CAreful not to over tighten, or you will break the unit, or damage the threads on the manifold it self, reconnect the harness connector, lock it by sliding the red tab to the lock position, check by pulling on the connector it self to see if its securely mounted, and wont come off by it self, then re-install the negative battery post, and start vehicle, and let it run til its up to Proper operating Temperature, that should do it dude,
I dont have a part number for the O-Ring, maybe some can chime in, and list it, and maybe dropp some more knowledge on this situation you have going on with the leak.
called the dealership today and they have no listing for an o-ring. said i would have to buy whole new unit at $140. i took everything apart and reseated the o-ring and tightened it down as much as i could, so it may last. i will check auto parts stores, but if i cannot find one, do you think one from a junk yard would work??