I found out what vacum line you were talking about the one going under the air intake, would that cause the reving?
I looked at both that were connetected there and to the front of the plenum. they looked ok did not replace but will get around to it. do you think this would cause the surging?
i took off the upper plenum and took some pics it pretty much shows that both the kit and FPR need replaced.
Damaged FPR and Nut Kit
so i will heed to your advice with the poppets and the connector ill be real careful with that...
more to come when the parts get here