I have a 04 Gtp n my car will start then run rough sometimes dying then straightens out . I've cleaned the throttle body n Maft . Seemed to help but my issue doesn't happen every time . There's no consistency when this happens also . I have no codes also. Has anybody had similar issues ? I read a few people had this issue with the older gtps but not a 04 . I also seem to get a little hesitation on wot .. Ideas ?