I was driving 90si In the winter. And we got a cold snap nd i never drove it for a few days. When i started it up next my idle was terrible and would just stall out. It ran perfect before. My ecu has had some codes like o2 sensor. But i just had it replaced Tps also had replaced before.. The biggest change in my ecu was it now shows the cylinder position sensor.. I have had it to the shop and they said my distributor was done and changed it.. But fixed nothing.. The said my computer was done. But i think they didnt want to get into it. I have a air/fuel gauge and once warm runs so lean it doesnt register. Would that mean that my air is rich and gas is lean? If so could any lines have froze causing water in tank? Will putting gas line antifreeze in gas tank get that water out.. Completely stuck This happened in march and still runs bad? Would any water have come out by now?