I have the PMDG737NGX for FSX and it has worked great for 2 years.  As soon as the 737 was available for Prepar3D V4 I purchase it, with the intent of deleting FSX.  However, almost every time I takeoff, the engines shut off between 2000 and 3000 feet.  I set the fuel level to full and watched the fuel decrease to nothing right after takeoff.  After the reset, I set fuel to full again, but this time the fuel depleted quickly, but at 3000 feet, I still had 33K (started with 46K), and the engines shut down again.  This has happened several times.  I have been able to fly normally a couple of times, but the last few times, the engines shut down.

Any ideas?

You tried reinstalling, or do you not have an active failure setup?

looks like active failure /fuel dump

 

 steve