car is fine til its warmed up. than sometimes when i stop at a stoplight or stop sign, the rpms drop really low it stumbles, than dies. usually starts right back up. i put some fuel injector cleaner in last time i filled up, but that didnt seem to help anything.
car doesnt seem to have as much power as it used to either. im just guessing it needs new wires and a coil or something. i put in new plugs last spring.

 

Have you check the IAC valve.... Located on the throttle body.. Could be going out or carbon build up..