Ok this is my proble, Before when i had the iacv connected the rpm would go up and down from 900 rpm to about 1800 rpm, but when i disconnected it the car would idle normally. but recently the car started bouncing again, from 1k rpm to 1400rpm. but its not like when the iacv is connected, its fast paced. its really pissing me off as for codes its throwing o2 sensor. iacv. Can some one help. how do i bypass the damn iacv. i just want to get rid of it.