Alright so I've done some research and can't seem to find anything that matches my problems.everytime my truck cold starts it will idle up as the cold start injector does and and bout 5 seconds after it starts to die and I have to play with the throttle to keep it running.i can run it for about 30 seconds to a minute then it runs great.could it be my iac valve,auxillary air valve? And if so how could I fix these or do I have to replace it