Truck keeps turning off

[dwpayne]

My truck keeps turning off whenever I am driving. The fuel pump just shuts off and when I go to restart it my fuel pump isn't running. My programmer says Fuel pump relay cir dvr fail open. I have replaced the fuel pump relay and the fuel pump. It usually only dies when the engine is at idle in park. Or when I am turning and let off the throttle then the engine will just die. I am out of ideas and really need some help. Thanks.

[dannyboy950]

I would check the wireing and connectors to the fuel pump for a short,chafed spot to ground causeing the relay to trip out. Check continuity also you may have a broke wire seperateing at times causeing loss of power to the relay.

[ZMANN]

U best get this fixed asap
running injectors out of fuel will damage them

they count on the fuel to cushion the injection cycle

[dannyboy950]

Yup like repeatedly dry fireing a gun.

[dwpayne]

The wiring is all good I already checked it out and the injectors are my main worry right now that's why after doing all I have done I posted on here cause it got really bad yesterday with turning off most of the time I wait about 10 min then it will fire back up.

[dannyboy950]

Can your programmer be taken out of the loop and the truck run stock. Just to see if it is a programmer issue.

[dwpayne]

Just got home and the code it's throwing is P0231

[dannyboy950]

Check your inertia switch, trip it and reset it. The code is for loss of power to the fuel pump. Check your ignition relay fuse and wireing. Did you unplug each plug in the fuel pump harness and check them 3 if I remember right before it goes thru the firewall.

[dwpayne]

I found it the plug for the fuel pump on the back of the fuse panel got backed out somehow over time I guess plugged it all the way in and it works great now. Thanks for the help.

[dannyboy950]

Good deal man glad ya got it.