Hello fellow sti owners… I own a 2013 sti and have been having some big issues with it, so let’s start from the beginning. About 4 months ago it was throwing a code about uneven crankshaft wear after I only replaced the coils and sparks on one side(didn’t have time for the other), but I ignored it and kept erasing the code. Then about it 3 months ago while going about 80 on the highway the engine stalled out. Tried to restart but heard a whirring noise. Brought it to a Subaru dealership and a week and 300 dollars later they determine that the engine block was locked up, but they didn’t tell me what caused it. They offered 10k to put in a stock engine block and I immediately refused and got it towed home. From here I just had it sit in my garage trying to figure out what to do to it. Fast forward to last night I decided to get a new battery for it since the old one was dead, replaced the battery, and decided to try starting it. It made the same whirring sound but then started right up. It ran perfectly fine I didn’t notice anything odd at idle. Pulled it out of the garage and noticed I had no power steering. I then took a look in the engine and noticed my serpentine belt was gone, and I found it sitting in the back seat of the car split in half. So my question is this: did the serpentine cause all the issues I was having such as stalling out, or was in the mechanics who cut it to take a look in the engine to determine what my issue is. Still don’t know what I’m gonna do with it but as far as I know I don’t believe I need a new engine block.