I recently had the timing belt on my 05 wrx with 78k miles changed and a few weeks later driving about 25 miles per day one of the pullys broke... I was at either idol rmp or 2500 at the most because I was still letting things War up when it happened and I was at a stop when I noticed the car wasn't running any longer. I did try to restart it... Two questions... Could this have happened because of a bad timing belt change and what parts should I be looking at replacing?