2008 F250 KR spartanized fuel/not starting issue DTC P0231

[ruger311]

Have a 08 f250 kr spartan tuned for 48000 mile not one issue. Been running the 310 since release. In December I wanted to swap to 210 for a little towing. Loaded tune and wouldnt even crank over. Cleared dtcs (p0231, d1000) and it would crank but no start.

Got with Mick and updated dashdaq got new tunes put 310 back on and fires right up. Said to hell with it. Drove just fine till today.

Got back from 500 mile trip was low in fuel. Filled up cranked longer than usual then fired up. Made it 10' and died. Would not fire again. Reloaded tune and cranks bout 6 sec or so fires up then dies again. Only way to get it to do this again is reload tune or disconnect battery.

Replaced filters and nothing. Don't hear fuel pump coming on. No fuel coming out of schrader valve either. Seem like just starting in fuel in top filter bowl.

going to check voltages etc tonight, already swapped around relays and fuses, as well as checked inertia switch too

Sounds like the lift pump???? Not one issue before today

[n2ocharged]

Originally Posted by ruger311

Have a 08 f250 kr spartan tuned for 48000 mile not one issue. Been running the 310 since release. In December I wanted to swap to 210 for a little towing. Loaded tune and wouldnt even crank over. Cleared dtcs (p0231, d1000) and it would crank but no start.

Got with Mick and updated dashdaq got new tunes put 310 back on and fires right up. Said to hell with it. Drove just fine till today.

Got back from 500 mile trip was low in fuel. Filled up cranked longer than usual then fired up. Made it 10' and died. Would not fire again. Reloaded tune and cranks bout 6 sec or so fires up then dies again. Only way to get it to do this again is reload tune or disconnect battery.

Replaced filters and nothing. Don't hear fuel pump coming on. No fuel coming out of schrader valve either. Seem like just starting in fuel in top filter bowl.

going to check voltages etc tonight, already swapped around relays and fuses, as well as checked inertia switch too

Sounds like the lift pump???? Not one issue before today

DId you ever find an issue with this? I am having the same problem occasionally. Happened the other day (3 weeks or so) and then again today...

Let me know.

[ruger311]

Inertia switch dash passenger side panel

[n2ocharged]

Originally Posted by ruger311

Inertia switch dash passenger side panel

Did you replace the switch? or did you do simply reset it?

[ruger311]

They replaced it. Resetting wouldnt work it was shorted out

[sinner6.0L]

done more than a few low pressure fuel pumps in these trucks. so many that I remember the code without looking it up

[04hdfatboy]

Originally Posted by sinner6.0L

done more than a few low pressure fuel pumps in these trucks. so many that I remember the code without looking it up

is the low pressure fuel pump the pump that the airdog replaces?

[sinner6.0L]

yeah, that's the one.

I wasn't aware you could put an airdog on a 6.4, that would be cool though if it's true.

[04hdfatboy]

Originally Posted by sinner6.0L

yeah, that's the one.

I wasn't aware you could put an airdog on a 6.4, that would be cool though if it's true.

I put an airdog II on my 6.4. I did mostly because of the better filtration/water seperation.