I think I may have just found my problem but have no clue what the part's called. It's a Vulcan engine that is Flex fuel. It's the little 90 degree black hose on the left side of the intake manifold.

This isn't an answer but this is a picture of what I am trying to find out to fix.

I dont know what that hose is but sounds like either vacuum leak or bad TPS.

Late response but it was the PCV valve elbow :)

I have an 02 taurus with the same symptoms.Checked this piece and it has some visible cracks on the outside. Crossing my fingers that this is the problem!

Thats a egr colinoid

I had to replace mine. Thats thr part name its extremely important