This morning when arriving to work my 1995 Bronco 5.0 decided that it didn't want to shut down. I parked, turned the key off and the engine started dieseling pretty hard. It was making an odd sound high pitched sound and i wasn't able to get it to stop until i put it in gear and then shut down (even then it made quite a noble attempt to continue dieseling). After it finally stopped i had quite a bit of smoke coming from under the hood. After work I took a quick look under the hood and vehicle and didn't notice any fluids that could have caused the smoke. At the moment i can not start the vehicle (can hear the starter solenoid click but it isn't turning the engine over) and will have the vehicle towed back to my place come wednesday. Any advice will help. Thanks.