[Shilohsho]

What tells the lift pump to start and stop. Mine is quitting after 4-7 min idle time and ther is no power to the pump when this happens. I turn the truck of and then start it right back up and the power is back on at the lift pump.

So, What is telling it to start and stop?

 

[Mopar1973Man]

There is a relay in the power distribution box under the hood for the fuel pump and it gets its control from the PCM if my memory serve me right...