I have seen on one occasion where the engine turned off soon after being started, and the alarm system went into diagnostic mode. For about three minutes we couldn't turn anything on the car. Since the engine was abruptly turned off after starting, the alarm system was "checking" to make sure that the car was not being stolen. By cutting power to mail system, the system is preventing would-be car thieves from driving away.
I believe that is what happens in your case. To make you feel better, you can go to Checker O'Reilly or Autozone and have them test your electrical system. They will check your battery, starter, and alternator. You said that the car starts now, so I wouldn't worry about the main relay.
Sunday, November 16th, 2008 AT 10:45 PM