Why my car turns on for a few seconds then turn right off

@rivera64545 , Jon, Start then stalling issues, is there security light on, bad sensors TPS, MAP, MAF, IAC, O2, failing knock senor, faulty injectors, dirty throttle body, EGR valve, major vacuum leak, failing fuel pump, bad ignition, bad distributor, plugged catalytic converter, etc.etc.. As a first step have the car scanned for trouble codes as it may identify the exact problem. Some of the auto parts suppliers offer free code reading like Pepboys, Nappa, Advanced auto parts,etc and some of the guys are very knowledgeable and may have seen the issue often and put you on the right track or see if one of your buddies have one to lend. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.