Not sure if this will help but here goes. I bought an 08 super crew with 7000km on it. after I put another 8000KM on it i had simular problems. As it is under warrenty I took it into the dealer and they replaced the #8 coil but it was still doing it (not sure what the codes were). they replaced the wiring harness and everything seems to be good now. Hope this gives you some help.