I have a 2001, 2500 24v with endless fuel problems. In the past my truck has eaten a couple of stock replacement transfer pumps and finally I invested in Airtex after market pump and have excellent fuel pressure. Yesterday I thought I ran my truck out of fuel due to a broken fuel gauge. Anyway, I replaced the fuel filter, which was clean. I checked the transfer pump by just bumped the motor and while the transfer pump runs for about 25 sec i cracked open the fuel supply line (test port banjo bolt) and have great pressure. Now I tried cranking the motor for about 25-30 seconds hoping to allow any trapped air in the injection pump to vent out the drain manifold. The next step I tried bleeding the air from the high presser line at injectors 3,4,5
and i'm still unable to get fuel from the high pressure lines. I tried everything I know, I have preformed this procedure over 100 time in the past. I don't have a scan tool but I checked the dash coded and P 1693 cam up. Does anyone have any idea what could be the problem? Could it be the ECM or the FPCM? Would any of these issues cause trouble bleeding out air?

 

With the injector lines loose , are you getting equal amounts of fuel from each line?
If not, then suspect the VP as having a broken shaft.
Sorry.

 

Sounds like the vp died.

 

is there any other way to check if the vp **** the bed?

 

have it scanned at an auto parts store, they will do it free
if the codes 1688 and or 1689 come up your FPCM is toast.
get a new VP44 and problem solved!
the FPCM is a non serviceable module on top of the VP44.
The new pump comes with a new one

 

does anyone know code P 1693 on 2001 24v cummins?

 

Quick search on Google




P1693 (M) DTC Detected in Companion Module A fault has been generated in the companion engine control module.

 

1693 is common if you have any sort of box on the truck. Sounds like after repeated starvation the VP finally quit.

 

a companion DTC code was set in both the PCM & ECM
that's what i was trying to tell you .... to pull the code you have use a code reader (scanner) from an auto parts like checker auto, autozone NAPA.........