No, the starter is used only when cranking. The stalling could be due to a charging or electrical fault. Have the alternator tested. It could also be due to a failing battery. Get a high discharge test done on the battery.
To test the ignition switch, note if the dash indicator lights comes on when it stalled. If yes, the chances of it failing is not there as you have power to the circuits.
When it was difficult to restart, that is the time you should be checking to see what is missing, electrical or fuel fault.
Tuesday, June 19th, 2012 AT 3:08 PM