Someone please tell me.....
Reply #4 –
I actually can't believe how reliable the 5.0 SEFI control system is, being only a year into production in two of my vehicles. At least in my experience/opinion.
My friend's '90 Corvette will throw a CEL if he even so much as thinks about unplugging his idle air control. I'm pretty sure I can undo that, the TPS, the EGR sensor....who knows what else, and I still go down the road basically without a hiccup. And no CEL :D which isn't necessarily a good thing, but it just keeps going.
My only complaint is that they like to idle high once warm. Pointless sentiment since you're almost never at a stoplight more than a minute or so...but if it holds about 1k RPM, after two minutes or so suddenly it just kicks down to whatever you set your base idle at. If you set it at 600 or so like I did, it catches you by surprise every time it happens.