Hi! 89 GT with 158,xxx , no modifications. I have been working down the surging idle checklist and so far everything helps a little bit but doesn't solve it. On cold starts it dies unless I rev it up a bit. Codes 11, no vacuum leaks. PCV, IAC, MAF are clean and functional. I separated the ten pin connectors and on the white #2 connector (VREF for sensors) it was burnt crispy and black. I cleaned and separated the connectors and reinstalled. On that first start it sounded and idled beautifully for about 30 seconds then started loping/surging again. Im thinking that pin is my problem, but don't really know how to address it. Any advice?