There is a vacuum line coming idle air control valve? on the left hand side of the upper intake manifold. It is the largest one on it and on my 88t it is missing and I have no clue where it needs to be plugged into. I can provide a picture if my description is to vague.

i say give a picture so people can just look and see what you mean

yeah pic would be lovely

alright ill get one added in a little bit