Help: Truck won’t start when cold. Electrical problem?

So I have been having this issue for about a month now. When I start my truck when it it under 15 degrees or when it has been 0 degrees overnight the truck will start up up and run strong for about 1 second and then stall out.

After changing a bunch of parts and trying different things I have found that if I unplug my - battery terminal even for a second and re connect it the truck starts normal and stays running as it should.

Does anyone know what this problem could be?

 

Sounds like the ECU doesn't like the information that it is getting from a sensor. Have you cleaned your map sensor and throttle body lately? Take it to auto zone and have them pull the codes and then post the results.