98 Detroit 60 no start

Howdy, I posted about this before. truck sputtered and died. I replaced fuel filters and used some ether and thought it was fixed. I got about 150 miles down the road driving at hwy speed and it shuttered as if getting no fuel a couple of times and died and will not crank. What I have done so far in chronological order………

- replaced all the fuel lines in the engine bay
- replaced the two sensors by the compressor
- inspected check valve. (When removed, it held fuel in the top but didn’t run through the bottom so I assumed it is working correctly.
- replaced fuel filters
- replaced fuel pump.

I also tried to start the truck from the fuel pump in-line connected to a bucket of diesel.
Someone suggested checking ecm fuse. I can’t seem to locate it. The wires to the ecm appear intact. When I turn key to the on position the dash lights come on and then go off after it cycles. I’m stumped at this point.

 

It’s a freightliner classic xl btw if that matters

 

I’m thinking when i ran the fuel line from the pump to a fuel bucket it would bypass any issues with the tank, but it still didn’t start.

I don’t think it has a diagnostic switch. I have seen the engine light flash if there was an issue, but it hasn’t done that in awhile.
I will go ahead and replace the valve. would the ecm fuse be anywhere besides the battery box?

It’s showing about 10 volts on the gauge. It rolls over like there is plenty of power and wants to start with ether but will die back out. Would it do that and still not get enough voltage to the ecm?

 

No I haven’t used a multimeter with it. I thought if it was rolling over it had the power needed, but I will try to jumpstart it in the morning. I’m definitely not a mechanic lol but I want to learn as much as possible about this truck.