My 2001 Catera starts right up, but after two seconds the power to the injectors is turned off and ther car stalls. If you try to restart it without first turning off the key it won;t start. But if you cycle the key off and then try to start it, the same thing will happen. I was told that it might be the anti-theft, but the security light is not on, so I doubt that is it. Anyone have any ideas?