Running out of fuel

[Izzys11]

i have a 2012 freightliner with isx15, truck died multiple times on the road a week ago ,electrical all stayed on just felt like it ran out of gas.
so far replaced Davco filter and fuel filter, new fuel pump actuator and lift pump.
dont have access to insight.
at the moment truck will idle for aprox. 45mins then die ,Davco fuel level stays the same but no pressure at the Compucheck port. if i drive it dies at aprox 4miles.
so far i have had 4 crappy mobil mechanics come to it and they all have no clue.
truck will start right back up and run for a shorter time. no smoke,no fuel leaks no air bubbles in davco,no rough running ,just feels like its running out of fuel.

[Rawze]

any low fuel pressure codes?. This could be a sign of some VERY BAD things...
info: https://rawze.com/forums/showthread.php?...9#pid15389

Will it pass an injector leak test?.
info: http://rawze.com/forums/showthread.php?t...3#pid75483

[Izzys11]

(02-15-2026 )Rawze Wrote:  any low fuel pressure codes?. This could be a sign of some VERY BAD things...
info: https://rawze.com/forums/showthread.php?...9#pid15389

Will it pass an injector leak test?.
info: http://rawze.com/forums/showthread.php?t...3#pid75483

No codes at all, not even when its running out of fuel.
Have a mechanic coming now, will get him to do the test....i hope.

[Rawze]

if it has a delete program in it, it may be blocking/hiding the code(s) of whats wrong.

copy program from ecm and e-mail it to me for a review of what someone did in there as well if that is the case.

[Izzys11]

update, new fuel pump ,new check valve at the end of the rail. same symptoms ,it acts like it just runs out of fuel right at the hour mark, possibly right as the engine hits 175. currently waiting for the ecm program. I will send it to you as soon as i get it.
Thanks