02 Voyager2.4 When I turn on the air cond. the engine starts to surge and stall on 2002 Chrysler Voyager

car seems to idle fine when air is off. only seems to act up when air is turned on. We have cleaned Throttle body. Spark plugs are in good shape...wires are good.If it stalls, I have to turn the key all the way off for one or two seconds or else the starter will turn over but will not start. COuld it be the EGR valve

Asked by for the 2002 Chrysler Voyager