why does car stall, usually in hot weather & when slowing down or turning?

what kind of car? is sounds like its overheating make sure coolent is is topped up, and could ne the fan not cutting in when it should

2011 Hyundai Azera Limited

Caused by engine low idling... clean up the throttle body, n check the spark plugs. Replace them if they are burned out

We read on another site to turn of the ECO. Tried it and haven't had a problem since.

Same stalling problem with my 2011 Azera. Turned off the ECO and problem disappeared for several months. Now, just 6 months later it's doing it all over again. Dealer has serviced the car more than 5 times and each time they say there is no codes so therefore there is no problem ! ? Cantacted Hyundai direct in Chicago and California and they say there is no problem if no fault code shows up. Tell that to my wife and grand kids if they are rear ended at 70 mph because of a stalled engine ! Thanks for nothing Hyundai...shame on you !

I've had the same problem with my 2012 Azera. Started stalling at lights about every 2 miles. It's been in the shop 3x since Christmas Eve. Still in the shop today. They cannot figure out what the problem is. They replaced the entire computer, Fuel throttle body, fuses and still stalling.