buick 2005 changed out coolant elbows, started the car ran for about 1 min. then

Go back and double check all your connections, especially the MAP sensor. If all OK and it still won't start, you need to check the basics - spark, fuel pressure, and fuel injection pulse. We're available to help you should you not be able to figure it out. Please contact us for an appointment and towing assistance. Brian @ Midwest Auto Services | 816-224-4247