I have a serious problem with my 2001 F150 that the dealer can't figure out. I am hoping that the experts on this sight can help me out. Every once in a while (6 times in the last six months) my truck will not crank over. There is full electrical on the dash with no error codes. This seems to happen after the truck has been running awhile and I park . When this happens, I have to wait, sometimes overnight, to get it to crank again. I changed the starter relay, checked all electrical leads, checked solanoid and starter, and check security system. Othar than this problem, the truck runs beautifully when it starts. This is not a good thing, and any suggestions would be greatly appreciated. Thanks