2000 Chevy S-10 like a rock?

Haha sorry for the sarcastic subject, but i'm a bit peeved at my chevy at the moment. Recently, the timing chain busted, which seems to be just the start of my problems. That got fixed, but now, when I drive down the road, the stupid truck just quits. It doesn't even sputter, it just dies. I can shift into neutral, turn the key, and it starts right back up, for the most part. The shop I went to hooked it up to a computer, and it came back saying the bank 2 O2 sensor was bad. They fixed that, and the next day, it quit 8 times on the way home from work. The check engine light doesn't come on, it just happens without warning. There were no codes for the fuel pump that came up on the computer; all the codes we're cleared. Noone seems to know what the heck is going on with it. Any suggestions, even shooting in the dark, would be fantastic. Thanks!