i've got a 2007 that feels like it is cutting out or missing whenever the outside temp getts about 90-95 degrees or above. i can start out in the morning while its cool and not have a problem. in the afternoon when its hot, i take off from a start after warming up and it feels like its missing till i get to speed. its not more then two or three misses at tops that i feel. no codes are being thrown. my signature shows everything that has been done to the truck. i have cleaned the map sensor and changed the fuel filters but this has made no difference. mechanic thinks that it may be an injector going out. i don't ever see the white smoke i keep hearing everyone talk about. it does blow black smoke a lot easier than it used to. anyone had this problem before? any ideas what might be going on? have an appointment tomorrow to have the injectors checked at a dealer.