Following up on this again, today I took the car for a proper run out of town since curing the firing issue. As I posted earlier, I was experiencing random idle speeds once the car would come to a stop to as low as 600 RPM however without stalling. Though as of yesterday after 20 minutes of driving & slowing down to turn into a driveway the engine cut out, I heard the warning bong but didn't have time to look down & check, but I could only assume that it was the electrical error warning once again. So starting it up a minute later after parking it I gauged the idle, it sat on 600 RPM as soon as it was fired for 5 or so seconds then randomly corrected itself & rose back to 850 RPM, all while in park.
After letting it sit for a few hours I headed back home, within 2 minutes of reaching the first roundabout it was wanting to cut out again. So all the way back I was having to stall it up at every stop & low speed turn to prevent it from stalling.
Basically in any drive gear the problem occurs once at normal operating temp. Which to me seems like the IACV is still at fault & needs further adjustment? Keep in mind that I have never experienced this issue before since removing the IACV for when I was going through the troubleshooting process from the beginning.
In the meantime I will swap ECU's & if no different then remove the IACV & replace with a clean untampered unit.
