So I'm pretty sure that it's the ops or fuel pump relay. Found a thread saying to test the pump by jumping a wire from any ignition on fuse to the g terminal on the aldl in the cab and sure enough there the pump goes. After I put a new one in . Is it fine for me to keep it rigged like this so its running whenever the keys on . My understanding is the pump should alway be on when engine is running anyways? Truck is definitely running nicer how I have it now.

 

Should be fine my ops went out 6 hours in to a 14 hour drive and I made it the rest of the way with a jumper in place of the fuel relay didn't hurt the truck to my knowledge. I replaced it but if it goes out again I won't be changing it as long as I can see my oil pressure I already have a toggle ran into my wiring for it. So I'm fairly confident it won't hurt it just keep an eye if anything funny starts going on with your electronics while it's like that, dimming lights for no reason, burning smell. Just to play it safe in case I'm wrong. Good luck with it buddy hope that keeps you going

 

Thanks for all the help man.

 

Have you relocated the PMD? Most of the time PMD failure will cause the truck to die like you're describing. It's happened to me a few times, but it stopped after i put mine in the front bumper with a heat sink from leroy diesel

 

Problem has Beenough fixed was bad lift pump and the ops

 

On a 1994 do the dual lift pump relay upgrade. Or buy one.

Use only Ac Delco parts for these unless going with an upgraded lift pump.

Use only an Ac Delco for a 1993 if going with a stock style lift pump.

 

Hey man, I have the same issue with my truck (94 6.5L turbo diesel), First I replaced/relocated the PMD, didn't stop the issue, then I changed the EGR and CDR (cdr does the same job as a PCV) valve, didn't stop the issue. Just bought and replaced the fuel injection pump, I have not had a single issue since. I bought the pump from SS Diesel Supply. They had a kit that came with a new pmd and resistor, pump and gaskets. it was pricy, but peace of mind was worth it

 

You can buy the exact same parts that SSdiesel supply sells, elsewhere for less money.

Walt does not always have the greatest reputation for customer service.