Originally Posted by terryknight
welcome to the .org
it sound like you father's truck is running out of fuel. the first time he switched tanks soon enough that the motor didn't ingest any air and the second time the motor got some air in the fuel lines and needed to purge it.
how much fuel was in the tank when this happened? was it the same tank both time? the pick up tubes in the tanks can break or the "foot" can fall off not allowing you to get all the way to E on the gauge before the engine stops getting fuel
you can check fuel pressure at the schrader valve on the side of the Fuel Pressure Regulator (FPR) on the fuel bowl. FP should be >50 at all time 65 is optimal. that will tell you the health of you fuel pump
3/4 Full in the tank he was using. The tank he switched to was totally full. Yes, both times it was the front tank he was using when it acted up.
I don't think that should affect him if he had 3/4 in the tank.
I'll go look for the shrader valve and put my fuel pressure gauge on it when i get a minute and report that number back here.
Originally Posted by BigFuel
Since you are poking around also pull off the intake system and reach into the turbo. Grab the shaft and pull/push it in all directions. If it moves side to side you might need to rebuild it, if it moves in and out you do need to rebuild it. The blades should be clean and straight and should never be able to contact the side of the compressor housing.
How cold outside was it when it happened?
The Cam Position Sensor is typically only good for two years. Normally the CPS fails and the engine cuts off not to restart again till a new CPS is installed. They can intermittently fail putting the PCM into limp mode till the CPS signal becomes reliable again (usually by turning the truck off and back on).
I too feel this is going in the Fuel pump/pickup issue, just giving you some other things to think about. Please check fuel pressure and turbo for hanging/binding and let us know.
I'll pull the intake off and feel the propellers on the turbo when i check the fuel pressure.
It was ~60-70F when it happened.
I don't think it's a sensor issue but i'm not sure. I won't rule it out yet.
Are the fuel pumps in the tank on these trucks? I'd assume since he has two tanks he'd have one full pump that sits before the tanks so you don't need to have two separate fuel pumps for each tank, but i could be wrong.