1994 Dodge Caravan 1994 caravan dies

I hope you are up for this challenge. :-) I have a 94 grand caravan with about 170K miles and has been a GREAT vehicle. The problem started about 7 months ago and typically turning a corner in city traffic the engine dies. I have replaced the spark plugs, fuel/air filter, thermostat. I had the fuel pump checked and it is fine. The repair shop says there is no recorded computer error and I hate not knowing what else could be the problem. There was an issue starting the van and I had to giggle the column shifter, but have not had any issues with that for some time. Is there anything in the stearing wheel mechinism/column that could be shorting out and causing the van to die? When the van dies, I pull over the side of the road and put in park and it starts back up without any problems. Any ideas or what is left to check? Oh, I also replaced the starter. I hope you can help. Does this model van have an ISC motor and could this be the problem? What about the ECM relay or ignition switch?

Thanks,
Lynn