Help, B16a Idle Question

I just got done doing the b16a swap, and I know I saw the answer to this question somewhere but I can’t remember where. My car won’t stay at the same rpm’s when it’s idleing, it will rev anywhere between 1000 rpms and 2000 rpms and it will keep going up and down. Can anyone help me out? could be something I forgot to hook up or something?

thanks

I just thought of something, could it be that I haven’t hooked up my o2 sensors yet?

That could be, but if you didnt hook up your o2 sensors, you’d most likely be getting a check engine light…

…perhaps a vacuum leak somewhere…

check your EACV…that controllers initial idle for warmup…check for codes as well…but most definitely hook up your O2 sensors…the ECU needs those to monitor oxygen content.

my friend had that problem, he changed his ECU and the problem went away