I have a 1999 Saturn sc1 and recently I have been having a problem where my car starts then it dies and won’t start after. I have changed the map sensor which fixed it then it came back, then I change the Idle air control valve and the TPS which fixed it now it happened again and I have no idea what it can be, one idea is the fuel pump but I think it works. But also when this happens the radio and the cigarette lighter ports don’t work and the obd II port doesn’t work either. Can I have any suggestions other than the fuel pump.

 

What is the security light doing? Have you plugged in a code reader and got any trouble codes?