My IACV has been going out on my h22 for a few months now. It just now started to get worse. It used cause the car's idle to fluctate at night and with the headlights on. Now it is just doing it all the time. I recalibrated my TPS, swapped out my Fast Idle Valve, and looked around for vaccum leaks (none found). Could this become a potential problem in the long run or just become a nuisance? I will replace it eventually, but right now I don't have the cash to.