I have a 99 Mustang GT and just recently has a stalling issue. It does not happen at any certain time, or hot or old, or day or night. It happens when I am accellerating and when crusing at 55mph. The weird thing is that when it stalls, my theft light starts blinking rapidly and my dash or odometer has dashes in it instead of actual milelage. My car will turn over but will not start up. Eventually, after my car has this episode, it starts up and drives fine. Somtimes it lasts for 30secs and sometimes it last for 10 mins. Has anyone experienced this before and what was the problem? Do I have a faulty ECM?