Well the Techron cleaner has in fact helped immensely with the hard start problem. The vehicle starts fine now.

The hesitation stalling issue is now very consistent and predictable. Every reasonably cold morning (I live in CA and realize it isnt really cold) after startup when the vehicle reaches its cold morning operating temp around 80 C the vehicle will hesitate. This happems when at lower RPM in first gear when given more than half throttle. This happens mostly when acclerating off from a start. If I go at it smooth and easy the vehicle runs fine. If however I need to get moving quick the car it hesitates.

The stalling only occurs when the above symptoms are occuring followed by a quick lift of the throttle. If I keep my foot in it the car eventually gets over the hesitation in the higher RPM range.

So I am in agreement with the recomendations thus far on temperature sensor replacements.

Any other thoughts with the new and more consistent symptoms.

Thanks to all!