Hey guys I am experiencing a normal idle when starting up around 1500rpm, but when the car is warmed up it fluctuates between 1100 to 1800rpm. I looked at the IACV and saw that it was clean of any gunk but still proceeded to clean it but still with the fluctuating idle. I was wondering if it might be the FITV (which I did not try cleaning yet) or if the o2 sensor is a reason for the idle to fluctuate. Any other suggestions?