cant start my car after installing a new battery

[Timmy_fto_]

Hey guys
I just got my fto dew days ago
and the battery is dead
I brought it back today
and they installed a new battery for me
and the car started...then 2seconds later...
the car turne off....
They said the computer needed to restart or some sh*t...
and i drove it like 15 minutes...every time i stop...the engine turned off..
I left my car there and they said they will fix it..
but im just wondering what happned to my car...
does anyone know..thanks everyone

[Supplanter]

Because the battery has been flat for a while, the ECU has forgotten how to run the car. It doesn't know how to idle.

Take it for a drive for an hour or so, and be prepared to stall every time you stop at an intersection

It will fix itself.