car doesnt stay on on 1991 Saturn SL

i have a 1991 saturn i turn it on and for two minutes later car shuts off

Asked by for the 1991 Saturn SL
I just had this happen to mine, Saturn SL2 a 1999. It was the Engine Module and it cost, with labor $431, on Cape Cod MA to repair. It could also be the engine coil, which is cheaper to replace, but given the age of the car, it could be the module. good luck
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my saturn runs rough bought spark plugs wires and coil but they say i need 2 coils and where would u put them