nesbob

i've got about 110,000 miles on mine 03 2500 5.9l h.o. truck shuddered a couple of times but kept running about 10 minutes later i was stopping for a red light it stalled turned it over a few times and started tried to accelerate stalled again turned it over some more started again let idel in gear accelerated slow started running fine i got home it was ideling kinda ruff check code and got p 0628. does this sound like lp going out?

thanks bobby

Spooler

Yes it does....

nesbob

would an after market lp be better than in tank ? and what kind do you recomend

El Borrego

Sounds like that to me. My LP didn't give me any trouble until I put a load on it and then the engine started skipping, bucking and then died. I replaced it with the in-tank pump. I then had to add an additional in-line pump to take care of my aux. tank. Dodge knows the engine mounted pumps are trouble but will not do a recall on them. I understand that the dealers do track these pumps under a Chrysler STAR program. If they do a recall they would have to replace every pump back to 1992. In-tank deal is about $400 plus another bundle for labor. I got caught on the road. It was not dealer installed but by a diesel performance shop.

cdennyb

https://www.dieseltruckresource.com/...=181485&page=6

take a look down the page about 1/2 way and you can see the twin pumps and how I mounted them. Also, you can see the stock pump adapter i made from stainless so I could remove the lift pump and not have to loose the filter with all the cool stuff it has on it, water sensor, fuel heater, water drain, cartridge filter, etc.

PM me if you want a copy of the pdf file I have which outlines how tomake the adapter plate to use in place of the stock 'dead' pump when you switch to aftermarket types on the frame rail or in the tank.
db

Dieselnick

Check the DCX website (If it still exits). A very knowledgeable guy on this site told me they had the in-tank retrofit kit on there for $160.

Nick

sallyman1

are the upgrades that dodge did to the intank ones any better? i have a 2004.5 and it has a pump in the tank

nelrod

Sallyman, I don't know, but when mine was out, I looked real close at it and it looks Mickey Mouse to me. I am glad I upgraded, plus If for any reason I had trouble and was on side of road, I still have in tank pump, which I can get going again after swithing a couple of wires.

sallyman1

with FASS or airdog can we keep stock intank pump still in tank and just hook it up whenever? or do u need to remove it? what do u mean u can just hookup wires and go?

mopardamo

Hello,

Knowledgeable people have said that the in-tank pump will allow fuel through upon failure. How much I do not know? So if you draw thru the in-tank with a Fass or Air Dog and they fail you could reconnect the stock pump electrically and drive away. Isn't that funny the stock pump saves the day!

Damon

Dieselnick

The in tank pump is better. It's easier for a pump to push fuel than to pull it.

Nick

nesbob

thanks for the help it was the lp had a local shop install it for me . put on a fass pump w/o filters runs great know

thanks bobby

Fuel Preporator

FYI
You cannot draw fuel through the intank lift pump. You must bypass it when installing an aftermarket system. Also, a pump creates a vacuum and the fuel is driven in to it by an outside force, atmospheric pressure. If the pump is located above the surface level of the fuel atmospheric pressure minus the weight of the fuel column to the inlet of the pump is the available pressure head. If the pump is below the fuel level, the available pressure head is atmospheric pressure plus the weight of the fuel column. If you want to figure the actural pressure, atmospheric pressure at sea leve is 14.73 psi. Diesel fuel weighs 6.9 to 7.2 pounds per gallon. There are 231 cu. in. per gallon so you can add .03 lbs per inch. Placing a fuel pump at the bottom of a tank, that is let's say approximately 12 inches from top to bottom, will increase the preassure head by 0.36 lbs. So at sea level, putting a pump in the fuel tank increases the available pressure from 14.73 psi to 15.09. Not a lot of difference! Now, remember that is the available pressure, how much use it is depends on the efficiency of the pump. The pump still has to create a vacuum to use that pressure. That is a bunch more figures. The truth is, putting a pump in a tank can help the flow by improving the proximity of the pump to the fuel. DTR Myth Busters!!

Charlie