Idle hunting s13 Sr20det
 

Installed a power fc and dyno tuned with the fc datalogit. i forgot to due the idle learn but luckily i have the dyno maps saved on a memory stick. my issue is after i load the map and begin idle learning procedures the idle starts to hunt at 1000-1500rpm and is not at a steady 900rpm where its set to be. i reinitialized and reupload the maps multiple times. checked coolant, cleaned the maf, checked the iacv, and made sure i had no boost/vacuum leaks. the car was running perfectly fine at the dyno shop when i took it for a test run around the shop. and now im home with this issue. so i dont know what to do now or what it could be. Zilvians help!

attached is a youtube video of whats going on*

https://youtu.be/ugqYkCmnkgg

02 sensor

(Didn'treadmessagelength)

Vacuum leak??

Mine did the same thing till I found those small little hoses with cracks :/

hey guys thanks for the replies.

i double check everything, still same issue. im thinking maybe the gas im using has something to do with it also. tomorrow i will go back to using shell v power instead of bp

idle hunting is now fixed.
S13 SR20det idle hunt finally fixed. What I did to solve it was to look around the IAVC for the coolant lines and i actually found one of the two that was kinked. With that said no coolant was getting to the IAVC and causing the erratic idle. I hope this will help someone else out in the future.

https://youtu.be/peS2zjOMjx4