Engine/Transmission (1998.5 - 2002) Do Egde Comp's Kill Vp44's?

[dragrcr1005]

i have just ordered my new vp44 pump from cumminstuff.com due to a 216 code. my thoughts are that the comp i installed a few months ago killed my pump. i have never starved the pump for fuel and only run my comp on three or less most of the time. i have done my research on TDR about the pump failures and i have come to the conclusion that they kill the pump. the reason i think this is, if you search the forums you will find that most people who have replaced their pumps once or maybe twice on 100k miles have comps. you will also notice that people will chime in and say they dont know why the pumps are dieing when they have 200k+ miles on the original. those people will have injectors and some hop ups and no comp or box of any kind. i was just wondering what everyone else thought. i am considering removing the comp when i install the new pump and putting in a set in injectors instead. i will be very interested in what you guys think!!!

 

[Cowboy Medic]

I have about 160,000 on my truck, of that 70,000 miles with a comp with the pump wire tapped. I play with it constantly, mostly off for bad weather like today, 3 for general playing around in dry weather and 5 when I really want to smoke it. So far the truck runs great and have never had any VP44 problems this is the original pump. I have read alot about people saying it causes them to die, but I have four friends who have all had to replace the vp44 and none of them had done any mods. So just my anecdotal view says it is more likely to be luck of the draw, but again that is an anecdotal view not a scientifically researched position.

 

[elandon1201]

I know they probably do but I tapped the wire with my Juice now and i am praying the new connector will help

 

[Gary - K7GLD]

I seriously doubt a Comp - or any similar device - will "kill" a VP-44 - but they sure can help surface the weaknesses that are already there!



41K miles on mine so far - zero problems...



OH - and a brand new spare rebuilt VP-44 back in my tool box - just in case! :-laf

 

[DieselMinded]

Personally , The comp Increases the Vp44's Duty Cycle , Do you think thats Better for it ?



DM

 

[GWall]

i just sent back my hot rod pump to Industrial Injection, they said that when i ran the drag comp with that pump it messed up the electronics in it and a couple other things. i never had any codes either, i just went out to start the truck one day it would hardley start and then barely ran pouring out white smoke the whole time.

 

[rb1]

sorry to tell you guys that i just had a pump put in and they said that my tst box and the lift pump had killed it and this truck HAD 3 new pumps a 2000 cummins short bed qc

rb1

 

[rb1]

and my friend had his truck in the same shop and he had to get his pump also But he DID not have A box on it

rb1

 

[dragrcr1005]

comp with no wire tap

i am suprised that the poll is so even. i know that with this new pump i am not going to tap the wire. i think that will only allow setting one on the comp to work. is that right???

 

[GEdwards]

I personally have a Juice, untapped. But only cause I have warranty left till July.



Here is my 2 cents. The VP44 is POS. Its almost as if its a Ford product



Its just not reliable. But it seems like its luck of the draw. Either people have gone through 3 in 60k or on their original with over 150k.



I will pierce mine when warranty is up, because it seems like its totally luck. There is no ryme or reason to failure. Other then the lift pump going bad is known to kill them quicker(obviously).



I think if I don't pierce it, to tell myself its easier on it that it will go bad by murphy's law. If I say, "What the heck, its going to die sooner or later anyways, mine as well gain a bunch of power" it will probably last forever.



Just my feelings on the subject.

 

[Gary - K7GLD]

Here is my 2 cents. The VP44 is POS. Its almost as if its a Ford product

HEY - I like that! :-laf



Maybe a new rumor for the mill:



Ford owns Bosch! :-laf :-laf

 

[DieselMinded]

Messin with the Vp44 is like walking on egg shells , if theres power gainers w/o messin with the Vp thats where ill be This time round'



Big Injectors are said to be easier on the vp



1 ECM , 3 Comps , and A Vp44



DM

 

[Gary - K7GLD]

Messin with the Vp44 is like walking on egg shells , if theres power gainers w/o messin with the Vp thats where ill be This time round'



Big Injectors are said to be easier on the vp



1 ECM , 3 Comps , and A Vp44



DM

Well jeeze Chad - ya run around overstressing yer VP-44 by smoking out kids, puppies and little old ladies in wheechairs on every street corner, and sure yer VP-44 is gonna fail - ya gotta TAME that devious and reckless right foot! :-laf :-laf

 

[Chace TX]

VP44's die, box or no box

My shop has replaced over 100 vp44's. some with boxes some without (tst, comp etc) I have seen no relation to dead pumps and boxes. I personally have had the same comp box on 3 different trucks, and have yet to kill a vp44, first truck had comp from 0-43k miles, 2nd had comp from 25k to 78k miles, and third has had the same comp after being upgraded to drag version from 76k to 145k with no pump issues. I just sold the box and put on a juice. By the way I have a reman vp44 in the toolbox, I will have to use it one of these days.

 

[Huff N Puff]

I voted yes.When you decide to reengineer your truck by putting a fueling box on it

You had better do your homework and fix all the other weak links in this chain. A stock truck is already plagued with a weak fuel delivery system. Making your injection pump flow more fuel pulling thru a system that is already weak,is asking for trouble. Frothy, aerated fuel will cause cavitation in the VP44 wreaking havoc in your VP. The VP44 needs lots of solid fuel to make it live. Throwing a heavier duty pump and a big line kit on the frame ain't enough. You need to open up the whole fuel system all the way to the bottom of the tank. I'm on my third year at over 600hp on my original VP44. It could also be that I'm really lucky. :-laf

 

[wtfd6]

i think they will die either way. my truck has never had a tapped wire and it is on its 3rd vp. at least that i know of anyway. when i put the latest on the pump i took off said reman in cz. so i know it has had at least two replacements.


mark

 

[DieselMinded]

Well jeeze Chad - ya run around overstressing yer VP-44 by smoking out kids, puppies and little old ladies in wheechairs on every street corner, and sure yer VP-44 is gonna fail - ya gotta TAME that devious and reckless right foot! :-laf :-laf

I know your Right Gary , (You Forgot the Kittens Tho) , Hey whats the fun in having it if you never use it ?



Interesting to see if the Industrial Injection VP44 is Better than OEM



DM

 

[Gary - K7GLD]

I know your Right Gary , (You Forgot the Kittens Tho) , Hey whats the fun in having it if you never use it ?



Interesting to see if the Industrial Injection VP44 is Better than OEM



DM

Absolutely!



I resist living in fear over the VP-44 - or restricting mods to the power levels I want in my truck - but if you're gonna play, be prepared to pay - I pay up front with preventative mods and having a FULL set of spare pumps, just in case.



But a failed pump along a remote roadside would still be scary!



As far as stressing the VP-44 with add-on boxes is concerned, these pumps move EXACTLY the same volume of fuel per engine revolution regardless of whether there's a box attached or not - only difference is whether the fuel is routed to the engine, or back on to the fuel tank. The Comp. according to Marco, does 2 things, adjusts how LONG the fuel is routed to the cylinder(s) by increasing the length of time the appropriate fuel solenoid is held open - and also by activating a SECOND fuel injection event per revolution to also increase fuel delivery.



Apparently, the VP-44 as used in some other applications, uses both those available injection events, and is designed to be capable of the "added stress" that event provides.



There have been known mechanical and electronic weaknesses of the VP-44 - most of them have been corrected by various revisions and internal mods as production and pump reconditioning has progressed.



Independent tests by some members on this board have focused upon excessive heat as being a major culprit in premature VP-44 electronics failures - and several preventative mods developed to address and reduce that risk - member Bob Weis has been the leader in that area of development.



BUT, all that said, VP-44 failures are a crapshoot, as can be seen by various posts in this thread and a number of similar ones - some guys like me with LOTS of fuel system preventative mods will still have failures, while some farmer will simply drive the truck with precious little unusual attention or maintenance - and get a million miles out of his truck.



Yeah, we're probably better off to do the preventative stuff, but excessive worry and unusual tactics are probably more for individual personal satisfaction than real proven actual benefit...

 

[Fishin Guide]

I completely agree wirh Gary.



The pump does consume the same amount of fuel every revolution as stated. We are just rerouting to the injectors instead of an accumulator circut that terminates into the tank.



Truth be known, it's probably easier on the pump to send all of it's fuel to the engine instead of modulating it between the injector and the tank.



Dave

 

[rono]

I also agree with Gary. I've had my comp. with DD III's with the wire tapped and put about 40k miles on it, sent back to Edge, had it upgraded to the drag version. Now have an additional 40k on it and have had no problems so far (knock on wood). Wire still tapped.



From all the reading on the subject, it seems that the major of failures are caused by #1, lift pump failure starving the vp and #2, heat to the electronics.



I think I saved my vp 2 years ago when my fp guage told me I had '0' pressure either before or after the filter, and had the dealer replace it before it could damage the vp.



Ron