So this started happening on Friday after my classes ended. I was in the lot when right after I turned the key, the ignition was studdering for a sec until the it completely stopped. After that I thought I completely fu@ked up the engine by forgetting to fill up the oil tank. Lucky me it didn’t seized up But I wasn’t out of the water yet. After fill it with oil I thought I was done but instead it didn’t start at all! On top of that a loud and annoying ringing noise started ring and the front dashboard displayed almost every indicator. I tried replacing the battery and charging it, spraying starter fluid, and swapped the ecu. I can’t figure this out! So anyone here have a good idea what it might be?