my brother truck .every now and then it will through a 5volt code .only does it on hard acceleration or fast stops .truck dies starts and cuts right back off .if I pull ignition relay and wait about 2 minutes .it start right back .any suggestions

 

A quick google search shows that code could be set off by the ac pressure sensor, the map sensor or the egr valve. Since it does it under hard acceleration, I might guess the map sensor.