Choking out warming up

Every time I start it in the morning, it takes a while to actually start, and then it starts to choke itself out. It will idle high like around 1000 rpm's and it will be erratic, which also follows the engine temperature gauge. So when the temperature gauge drops the idle is funky. But when the engine warms up about a third of the way, almost half, it will run smooth, idle at 500 rpm's and if I cut it off, it will start up fine as long as it is already at least a third warmed up. I have been told idle air control sensor, temperature sensor, throttle position sensor, and a bad ground somewhere. Has anyone experienced this problem? What could be causing all that?