I was on my way to college this morning and i was making a left hand turn into the parking lot and my S90 shut off. I pulled off to the side of the road and found that my Tenseor pulley wore through the plastic housing outside of my camshaft belt and came undone and possibly broke something. Dont know if anything is broken yet, but it came off. Wheter a bolt came off or a some other kind of spline, i have the cylinder shapedpeice, with ridges on the inside of it,and it looks to be fine. I have no idea whats going on here help please! i need a vehcile do drive!!!This must of been happening for a while to drill through my plastic casing!!
Thanks

well i have an update. I found out that since i tryed to start my car once after it was borken down i may have blown a valve. Am i gonna be leaking air through a cylinder? I think i might have a shop do a pressure test. any suggestions? this really sucks... thanks in advance for any help

Most likely you DID bent valves.
Maybe the water pump let go or maybe the tensioner or idler pulley.