I swapped a 96 dx motor into my 93 si for something reliable to get around till I get a better motor finished, I swapped engine harness, injectors, dizzy and ecu to obd-1 and the ecu is a p-05 or whatever cx ecu, I also put a obd-1 intake mani and t/b on it (I hate the obd-2 dx snorkel intake mani) everything is all good except the idle, it sounds like the usual backyard swapped civic; idles from 1500-2500, up and down, I know this is usually the IAC, I pulled off the iac and cleaned it out really good, no luck, maybe I have the wrong clip on it the wires going to it are yellow/black and blue/black, is that right? the only other clip it could be is the one I have hooked up to the evap emissions purge valve and those wires are yellow/black and red, there are no cel's. I bypassed the fast idle valve, could this also be a problem? Could anyone help me out? any ideas? It Idles perfect until its warm, then it starts idling erratically. Thanks!

 

anyone?

 

Maybe the Fast Idle That You Bypassed, OR Maybe TDC Sensor. TRy It.

 

well, I un-bypassed the fitv and it runs great till the thermostat opens then all hell breaks loose again haha, Im gonna try and hunt down a new/used IAC and see if that helps, Im not paying $180 from honda for one. any suggestions?