S13 sr20det idle problem when its warms

[JonathanPrem]

Hey guys,

I just finished my Sr swap but i'm having a idling problem when it warms up.Around 70*c the idle will go from 1000rpm to 300-500rpm ish. But when the motor is cold it idles prefect. Its semi built sr20. cams,isis mani,bigger turbo, and inj, tuned already with powerfc. It came out of a running car so i really don't know what i did wrong.

First when i tried to bleed the cooling system the gauge will go to H within 4 mins. So i changed the Temp senor to S14 Ka one and it did the same with but it took longer maybe 10mins or so. For me to bleed the system for 10 mins i had to be on the throttle or it would idle around 300rpm.

So far i checked the IACV coolant line and it has no pinch and there is hot coolant flowing through. Didn't check boost leak since i only happens when its warm. Will harness ground cause bad idle? i grounded it to the injector. Most of the ic piping has been welded and good couplers were used. I'm not running a o2. Tuner turned off the feed. Check engine is on but mostly for auto to manual conversion.

Anyone have clue what might be wrong