Hi all, i have an R32 GTSt thats hunting at idle, i took it to a shop and after an hour we traced it to a faulty AACvalve/IAA unit, we swapped mine with a known working one and it fixed the problem, so i tried cleaning mine (fair bit of carbon build up), which didnt fix the problem, so i bought a second hand one form a wrecker, installed it, and the problem was still there, i then reset the ecu as i thought maybe it was "ignoring" the faulty sensor, but this didnt work, i then adjusted the idle to about 2 grand and the "high revs" part of the cycle went for longer, but stilled dropped and fluctuated,
My question is, has anyone had a similar problem and how was it fixed, or does anyone have a suggestion as to what it could be? or is it possible that i was sent a dud IAA?
cheers