I've already replaced AICV (under the throttle body) and MAF, adjusted idle and ignition (which still acts up a bit even in timing mode) and I'm about to replace the AAC (which indeed is a pain where the light doesn't shine) Actually it's my last hope bc I can't think of another part causing my high idle and sometimes revving 3 times to say 1500 rpm and back under 1000 like it's retrying something. I do have a broken neutral switch, which probalby explains why my idle stays too high when I'm still coasting. However, when the car is not fully warmed up, I still have too high idle. When the ECU finds out that my TPS signal is giving throttle closed + no speed detected on the speedsensor, it goes to idle mode. Pretty messed up huh? 
HTH
HTH
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