Tbi high idle problem(since trans swap)

[BowtieBlazer]

I swapped my burnt up 700r4 for a th400 in my 88blazer. Since the swap my warm temp idle is almost 500 rpms more than before in neutral. Shifting from neutral to drive is petty harsh. I have the trans module hooked to manifold vacume I have checked for other vacume leaks with no luck. Does the old 700r4plug being open have the comp fooled or by chance is it another sensor that just happened to go out as well

 

[sweetk30]

in short you need to get a manuel chip. its lookin for tranny inputs and cant find so its in a basic loop mode. go to the efi section on here. i asked kind of this same question. i got good answers from others.