Please read this.

https://www.honda-acura.net/forums/s...5&postcount=14

I have a 96 civic. If you read the old post. You will see that I do not have a seperate IACV and FIV. Mine is one unit, which I have already cleaned. There is nothing to tighten in the FIV/IACV. It is setup differently. I also tried unplugging the connector to the IACV while the car was running, and when I did the idle did not drop down it just began surging from 800 to 1200 rpms very quickly and violently. I plugged it back in and went back to a slow surge of 800 to 2000. What the hell is wrong with this thing.