I have a '94 se-r that has a rough idle. It has a japanese sr20 that was swapped in a few months ago, I bought the car like this so I dont know how long it has been doing this. It has an AEM short ram intake. Is there an easy way to diagnose the IACV? Also, Can someone tell me what ECU wire triggers the radiator fans? right now they are wired to always be on. thanks aaron suchy L.A.