95 tercel

I have expierenced problems with my car stalling at stop light. Especially in the summer(warm ) months. In the winter it runs ok. The dealer replaced the egr valve and it worked fine for a while , but the problem came back. Does anybody have suggestions. Please help

possibilitys check for excessive vacuum leaks, run fuel tests match to specs and/or run scan tool on vehicle...also check barometric sensor.

make shure it is not over heating also, if so thermostat and raditor flush, or maybe waterpump. I would highly recomend to clean your throttel body out also, i did this to mine and it ran 100% better!!