hello all im new to the forum and i have a problem that nobody local can seem to identify. Any time i start my car (warm or cold) she runs awesome. within 1-5 miles the check engine light comes on. So i take it to the local parts store and their reader says "unable to connect." i take it to the local guy who does all the dyno tuning and he says he'd love to tune it but i have to fix the computer. His equipment read the live diagnostics but still no codes. i do smell that the car is running too rich and when the check engine light is off it will try not to idle occasionally. it almost acts like the IAC is bad. Any help would be great.