Where is Throttle Position sensor on 04 Kia Optima

What is your question?

It starts and runs for a few miles then it shuts off and when you start it again you got to rev up engine to get it to stay running, then after a few miles does it again?

What makes this problem better or worse?

When engine gets hot it gets worse

How long has your 2004 Kia Optima had this problem?

Awhile now