i have a 97 f150 with a 4.6 and 4x4 filled up right before i went to work today and my truck was running fine got off work about 7 hours later took my friend to the store then to her house when i got there i cut the truck off for a few minutes then started it back up and thats when eveything went down hill put in in reverse and went to back out and the truck was acting like it didnt want to go so once i back out put it in drive and it would barley move so i just put in neutral and rolled in the drive way and called a tow truck also the motor was making a buzzing sounds for about a minute after i shut it off