Started this crap all of a sudden, Turns over great but it will sputter out and die completly but starts right back up. This might happen while i am sitting at a traffic light or it will sit there for 20 secs and then just sputter and shut off. Whether it dies completely or almost dies my service engine soon light comes on, i have changed my o2 sensers, changed my fuel filter, did a tune up, changed catalytic convertor and it still doing it. This has been going on for about a month and at this point it won't run at all, starts great, won't run, just idles and then sputters and shuts off