3500eh

have been having trouble to get truck to start. 4 sec, 6 , 8 secs cranking to start. then it runs fine. then no start. no codes
install fass lp and truck still wont start. mechanic used ether to get er started and runs fine. shut truck off and restarts with 2 secs cranking.
leave shut off couple hrs, no start!
i now get codes 2509 and 0628. what gives?
why no start? old lp must've still been good, i think. help, need truck for work

SmokinDodge12V

Welcome to the club, read this thread there are alot of 03s with the same problem me included nobody knows for sure what is wrong with them some say injectors some say its the new ULSD fuel. good luck
https://www.dieseltruckresource.com/...d.php?t=164730

coolslice

I'm no expert by any means but I just installed a Fass on my truck. Sounds like it's either sucking air OR your pump maybe isn't running untill the truck actually starts. Can you hear it running when you turn the key on?

Ramtuff06

try disconnecting the fuel line from your lp to your cp3 at the cp3 and turn the key to the on position if the line starts shooting fuel instantly then your fass is fine but if it takes 3-4 secs then you have some air in the lines......as far as injectors take your truck to a diesel injector shop and let them look at it

3500eh

i dont believe its my fass. had problem befor fass. hear pump working and old filter used to fill in couple secs, just hoped this would cure no start prob. truck is parked at dealers for scans and what not tomorrow. find out what i already know. here is a couple hundred, thanks for nothing

Ramtuff06

maybe its the fca malfunctioning.........i had 04.5 that had the same problem and i changed the injectors, and two lines and then found a bad fca that would stick......the truck would rev to 4,000 rpms and STAY there for a good 3-4 secs with my foot off the gas.....then later if you would shut it off the truck would take 10 sec to crank.