My car has been dying lately at almost every stop light. I've noticed it happens when the weather gets warm after it's been relatively cold. I know some of that has to do with the ECU, but I just changed my oil and was entering the service record on the S2000 owner link and found this...thought it was interesting:

Sometimes my Honda seems to idle poorly, hesitate on acceleration or experience hard starting. Why is that?
All parts of the U.S. have winter/summer blended fuel, which is needed to prevent cold or hot start problems. Winter fuels have higher volatility to compensate for cold dense air. Conversely, summer fuels have lower volatility and are less prone to "percolate."
If winter blended fuel is used in warm or hot weather, the higher temperature may cause the fuel to "percolate" within the fuel system.
Summer fuel may not vaporize adequately in cool weather.
These situations are normally localized and last only during a brief period of severe changes in climatic conditions. Normally, no vehicle repairs are needed for these situations.
Buy fuel from high-volume name-brand stations.


Rice

 

I always run Mobil 93 or Sunoco 93 or 94 if I can find a station....never had a problem...ever.

 

[QUOTE]Originally posted by RiceBurnerTX
[B]My car has been dying lately at almost every stop light.

 

could be the ecu, but also may be your throttle cable?

check this thread:

https://www.s2ki.com/forums/showthread.php?...threadid=112599

(you should probably take your car to your dealer to have them check it)