2005 Kia Rio With a P0170 Code

I have a 2005 Kia Rio that I just replaced a head on and it will run great until it warms up the it will not idle correct and is pulling a P0170 code. Anybody have any diagnostic procedures for this code. Thanks

Make sure the intake hose is on the throttlebody good and tight and it is not leaking.

I have replaced the clamp and it still have the same problem.

Check the rubber, plastic, and seals on your PCV system, and for unmeterd air leaks from the air cleaner box to the throttle body.

As of so far I have not been able to find any vacuum leaks. I have double checked the intake gasket, hoses, and air intake system. It only has the problem when it warms up. It will also rev up to 3000 rpm's when idling from no reason. Any ideas. Thanks