do you have access to a scanner? what year is the truck? how many miles? what repairs have been done ?
did it just shut off or lose power and then stall? do you hear the injectors when the key is turned on? is the ficm original? how are the batteries?
do you have a multi meter?
what kind of scanner? did you check pin 16 for power?
just shut off
I'll try injector noise
ficm think is orig.
didn't check pin 16 what is it
no buzz , most likely FICM.
DLC or connector gets power for the scanner on pin 16 from cig fuse
weak batteries or charging system problems can cause the FICM to fail
low or no oil pressure from the high pressure oil pump could cause a no start too.
what is ficm
charging system is ok
FICM is the duel injector control module
you might have lost high pressure oil for the injectors
did you change the ICP in the RH valve cover
Haven't checked oil pressure
what is icp
You can pop off the top for the secondary fuel filter and see if there is fuel in it.
you said you replaced oil sensing switch
ICP is the injector control pressure sensor
tells computer(ECM) oil pressure
fuel in secondary filter
replaced oil sensing switch
If the ICP is new the high pressure oil system need to be tested for leaks. There could be a leak or the high pressure oil pump my have failed.
we need high pressure air to test system
I am leaving for church, we can continue later if you like
thank you very much
always good to verify things like FICM power. we need 12 volts to FICM and should see 48 volts out to fire injectors.
Ficm voltage can be tested with a multi meter.
We should see min 500 psi for the injectors to work. there are oil rail plugs that leak and at the pump a fitting that leaks, even the injector seals.
air checks can test for leaks in the high pressure oil system.