Car runs normal for 15-20 minutes when started from cold, then it will stall

Yes they recreated the stalling however could not find a problem. Thanks for your question.

When it stalls , how long before it re-starts? Will it then stay running again for 15-20 minutes?

Thanks again. Restarts immediately however runs rough right away and will stall. May run for a minute or so before running rough and stalling. Think it is heat related?

I'm a slow thinker , I'll amend this reply tomorrow.

Thank you.

sorry for the delay , I can't think of anything else to ask that would not involve hands on testing. IF the dealer actually had it when it would not start after stalling , they hopefully would be able to at least determine what system is being affected. Without that knowledge , I could guess all day long. Good luck. IF you have benn paying dealer for testing and 'diagnosis , maybe they gave you a detalied report of systems tested/monitored and the results. Maybe you could post some of that info and it would lead somewhere.?