Low oil presure flashed once and truck shut off. Wont
Restart . Truck was doing fine all numbers were good, no engine lights or warning at all.

 

What numbers looked good?

 

Well do you have Oil Flow to the Filter housing when cranked??

Hold the black drain down and have someone crank

 

Low oil pressure is an idiot-light based on the reading from the oil pressure switch, which only feeds the dash cluster. So if the switch is holding oil into the filter housing and not letting it spew out of the engine, that's not the root cause. The switch is set to read "full" above 7psi and "zero" at 6psi while the mechanical regulator on the LPOP is set to 75psi, so it might have been the switch picked up a massive drop in low-pressure oil pressure immediately before the HPOP starved. Unless you were watching ICPV tank and IPR% spike while it died, there wouldn't be any other sensors to pick up a complete loss of oil pressure.

Do what benny said, see if the oil filter housing fills while cranking.

 

Voltage and eot, ect things . Was just saying that nothing was out of the ordinary

 

You will want to look at ICP and IPR rather then temperatures at this point.

 

Maybe the oil pressure gauge actually did it's job when the truck ran out of oil?? Out of oil = shutdown.

just an idea.

Sorry Bryan, I should have read your post better--LOL.

 

Def had oil in it, that was checked first before I posted

 

Well a HPO problem may Look like a LPO Problem

What Year???

Post these at KOEO--Cranking
ICP
ICPV
IPR%
FPW
RPM

 

2007.
I'm at work now, going to get it in the morning and will start looking at things then. Will post results.

 

Probably going to end up HPO problem


But Tell US How fast the Oil would fill the filtert House Upon Cranking?

 

Oil wasn't out of bowl. I felt what I thought was the button to push. About 1oclock looking down from the top. But cranking it no oil filled back up.

 

So there was no oil coming into the filter housing at all?

 

Here's a pic:

http://www.backglass.org/duncan/ps60...l/ps60_025.jpg

There's the drain and an anti-drain back.

 

Time to start looking at the LPOP regulator then.

6.0 Powerstroke Low Pressure Oil Test - YouTube