Where is the Crankshaft position sensor located?

Yep, this can be the crankshaft sensor or the fuel pump etc. We need to see if it will start on starting fluid when the engine stalls out, this way we can see if the problem is ignition or fuel related. Please go over this video which can help us see what the problem could be:

https://www.youtube.com/watch?v=lXLJbuAZ4CE&t=29s

Here is the location of the crankshaft sensor which would be a good start because when they fail it will cause this issue, it is on the right side of the engine block near the front. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.

The sensor can fail intermittently either hot or cold. But it can be the MAF sensor, fuel pump, ignition switch, or the engine control relay. These problems can be hard to find because there are so many things that can heat up and cause this issue. Please go over this guide:

https://www.2carpros.com/articles/engine-stalls

Please go over this guide and get back to us.