The engine was left idling on my 2000 accord v-6 for possibly five hours. When I found the car, the engine had shut off and the check engine light was blinking. I'm not sure how long the car idled before shutting off but I would be less concerned had I found it running. The check engine had already been on for one day for an issue dealing with the fuel system. The car cranked and drove fine other than a slight whining sound coming from the motor. The coolant level looked normal. Will a motor automatically shut off if left unattended and should I be worried about anything because I need to drive this car on a pretty long trip? Thanks for any help.