Why does my 2002 Dodge Stratus stall when I put it in reverse. on 2002 Dodge Stratus

It only happens when I have the wheel turned while in reverse. Backing up straight it doesn't stall. Had it checked they couldn't find anything and they said there were no codes in memory. Had new plugs and wires, and new IAC valve installed. What is causingthis?

Asked by for the 2002 Dodge Stratus
poss power steering pump going out and over loading engine
Thanks for replying, I will check that.