i was on the highway for like 10min, then i got off at an exit and stopped at a light, and my car was making a very loud CLANK, CLANK noise...my dad said it was blown, but it had oil, adn there were no servie lights or anything...on the way home, this noise got worse, and i ended up stalling once on the road, and the engine wouldnt turn over for like 2 min, anyone have anyclue?