I also have "thrown a couple codes". Did the electronic Odometer read the codes, got a "P PCU" "P1693", followed by "P EUU" P0216". I read that that code means "fuel Injection Pump Timing Failure".
Truck is an '01 24 valve, 1 ton 4 w d dually extended cab, 3:55 gears, automatic, 69K.
(I am new to membership, joined after reading a response in "Trailer Life Magazine" from another member "John Holmes)(Also say above, "new rookie, fresh meat", in case my "etiquete" is not correct! Spank me later, help me now... please?)
Anyway, the actual performance problem: started about 2000 miles ago, only noticed on highway cruising. All of a sudden, dead throttle, no response, very short period, almost not noticable. Maybe coincidence, occured 1st time after I had to buy fuel on I90 in New York State TWICE at pumps I wouldn't touch, unless no choice. That trip, had some REALLY tough "cold start" problems in Vermont, maybe 15 degrees, truck ran like a gasser over-choked till warmed. Assumed bad fuel, changed filters etc etc. Seemed to run fine then came back.
When it dies, put your foot in it, it probably comes back and goes like hell. Can go several hundred miles no apparant problem, then maybe does it 5 time in a 20 mile interstate run.
Just ran 200 miles Sunday through the mountains of North-
west PA, down some muddy 4 wheel only access roads, ran like a raped ape, up to 16. 5 MPG with newly added Edge Comp box.
(I say "up to" that MPG because I expected higher MPG on 3:55 gears, running empty. flat running, 70 MPH on I 90, no headwind, best I did was 15mpg. I swear, two years ago, down in south Carolina that I hit 20 mpg, but I got a bad memory... )
Also, Edge box has made no difference to my dead pedal, comes and goes same before as after.
When it "dies", it feels as if you turned the key off, and when it catches back, it is as if you turned the key back on.
Is this a Bad Injection Pump? ( I assume a "VP44" in other references is "injection pump"?)
Bad Transfer Pump? (again, I see "pusher pump, lift pump etc etc, my assumption is these all describe what the book calls "transfer pump"?)
Has original style transfer pump still on side of engine, has not apparantly been changed over to in tank transfer pump,..... yet... . don't know if orignal injection pump, bought the truck used at 49K two years ago.....
I would appreciate any theories????
Also, Hey "Jet Pilot", from phone number I assum you are in Harrisburg PA area? I will be in Harrisburg on business Wednesday and Thursday this week... ...