Car wouldn't start. I jumped it and it started right up but as soon as I unhooked the cables it died. I replaced the alternator and still wouldn't start without a jump and again would die when cables were removed. Switched out the battery and still nothing. Spark plugs were recently replaced and on the rest drive it kept dieing but started again then the third time it died I was unable to get it started without s jump and unable to keep it going after disconnected