Will die at low idle when stopped for a while at a stop light or stop sign?

Hello,

It sounds like there could be an issue with the idle air control valve (IAC).
The IAC controls the engine speed while idling. A malfunctioning or a dirty IAC can prevent the engine from idling properly. It can make it idle high or low or shut down the engine all together.
Over time dirt a debris can build up inside the valve, which restricts air flow. If that restriction is high enough it will stall the engine.
Cleaning out the IAC can help improve the idle quality.

Here is a helpful guide:

https://www.2carpros.com/articles/idle-air-control-valve-service

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.