We got a 93 chevy blazer about a week ago. It ran fine for the eight days. My boyfriend drove over a speed bump in our apartment parking lot and the truck just died and wouldn't start back up. We pushed it to the parking spot. Now we are stuck on what to do. We bought new spark plugs, air filter, fuel filter, and a oil filter. we haven't installed anything yet. I wanted to get other peoples opinion on what might be wrong. We barely used it when it was running. The check engine light came on and off sometimes. Right now it won't fully turn over. It cranks but doesn't go over. Is this sound like a serious problem? Please help us.