i have a d15b7/z6 mini swap in my coupe and i am having some idle issues. the idle bounces from 1000-1500 rpms. i have cleaned the iacv and it is doing the same thing. i took one of my 93 coupe with normal idle and replaced it. but still idles funny and the 93 coupe still has a normal idle. can someone help me? i would like to have this problem fixed before i install the supercharger.

-91teg_ls

 

vacuum leak.. re check hoses screws etc.. gadid you get new gaskets? TB gasket? HG etc?

 

Yeah he's right, sounds like you have a vacuum leak at either a gasket or hose!

 

i think that i have it figured out/ i think that it is my fitv. i will check that tomorrow and replace that.

 

dam it's been a while but, if i remember, underneath the throttle body, facing the fire wall, there will be a flat plate with 2 fillups screws holding it, take that off and there will be a kinda like spring pushing on a screw, turn that screw clockwise untill it stops don't make a tight, just untill it stops.

that should stop ur ildle problem IF you don't have any vacume leak...