Alliant OEM Replacement Lift Pump Option ??

[DUBLR]

I am 115,000 miles on my 03 –HO and looking to head off this lift pump issue. I was looking at the FASS electric pump until I ran into this replacement for the OEM pump. It appears for the dollar amount and installation ease, that this would be a good spare to have on hand. Anyone use one of these, pros, cons, comments????



http://www.blueridgediesel.com/NPA-A6-07.pdf

 

[RJWEST]

195 Bucks,,,, seems a little high...

 

[DUBLR]

Not high compared to the FASS... !

 

[04 Diesel Power]

Give it a shot and let us know how it works.

 

[Bob4x4]

The basic short coming is you are still lifting the fuel a long way up and forward from the tank. Electric pumps were designed to push not pull. By the way, the oem pump was more money from the dealer when it was still available.



Bob

 

[RHestand]

The basic short coming is you are still lifting the fuel a long way up and forward from the tank. Electric pumps were designed to push not pull. By the way, the oem pump was more money from the dealer when it was still available.



Bob

Bob,

Would you please give me an explanation on lifting and pushing fuel. I have seen this terminology used in other posts but I don't understand it.

The way I thought a frame mounted fuel pump works is, being lower lower than the tank the fuel would siphon to the inlet side of the pump then be pushed out the outlet side and on up to the engine.

I must be missing something here.

Thanks for any info. on this.

Ray

 

[DUBLR]

This is all good input but my stock pump with an Edge setting 3 has worked just fine. How does one justify the cost addition for the electric pump? What is the negatrive to the pull vs. push since it has worked for 5 years 115 K miles? Still confused on that aspect.

 

[DPKetchum]

I've often wondered why there never was a high performance or longer lasting pump to go into the stock location for ones mounted on the engine.

 

[KDillard]

Im wondering why there isnt a high performance replacement pump to go in the tank. I dont want all that stuff hanging from under my truck anyhow. Stealth is the way to go if you ask me. #@$%!

 

[rbattelle]

This Alliant pump doesn't make much sense economically. 115k out of a stock OEM lift pump is a lot - many of them don't last that long (which is why Dodge went to the in-tank pump).

So why spend $200 on a pump that isn't very good in the first place?

I notice the Alliant pump comes with a prefilter. That's a nice touch, but I don't know whether it will increase life.

Ryan

 

[Lightman]

Bob,

Would you please give me an explanation on lifting and pushing fuel. I have seen this terminology used in other posts but I don't understand it.

The way I thought a frame mounted fuel pump works is, being lower lower than the tank the fuel would siphon to the inlet side of the pump then be pushed out the outlet side and on up to the engine.

I must be missing something here.

Thanks for any info. on this.

Ray

I not Bob but here is the explanation; the factory lift pump on the 2003-2005 were mounted on the side of the fuel filter on the engine there for being higher than the fuel tank the pump has to SUCK the fuel from the tank then push it into the filter hope this helps

 

[jakprince]

Kinda like drinking from a straw. Would you rather have one 12 inches long or would you rather use one that is about 3 feet long with your cup sitting in the floor.

 

[RHestand]

Lightman and jakprice,

I did not know the lift pump was above the tank.

It seems like everything I've read on this site, they were talking about frame mounted pumps, near and below the tank. I guess what I was missing is stock, it is above the tank.

Thanks for the replies.

Ray

 

[dan.poitras]

Most if not all highway tractors, cummins,

cat, detroit "draw" their fuel from the tank. Works for me. I just ordered two of alliants

 

[DUBLR]

Dan..... a man of Reason! What is good for the "real" diesel hammers is good for me (pull fuel concept). I qualify to say “real” to any possible flamers since in my former life, I have a million miles in an 18 wheeler (running guess what…a Cum Along. Back then we called them real nice rigs a “Large Car”. After beating the crap out of this, I am with you to buy the Alliant, but I think I will install the fuel pressure gauge before the swap…... just to have a benchmark. I have spooked myself about when/if these things will die or not! 20K or 200K!

 

[Bob4x4]

Most if not all highway tractors, cummins,

cat, detroit "draw" their fuel from the tank. Works for me. I just ordered two of alliants

Look at the size of the fuel line,and the type of injection pump along with the hp and rpm asked for.

The rigs I had worked on had at least 3/4" fuel lines (Cummins and Detroit)



Our Common rail will run with out a lift pump but you must remove the restriction on the vacuum side.



Bob

 

[DUBLR]

Where is the restriction valve... in the hose? How to remove? Does it make sense to remove ahead of time in the event of LP failure or will it cause issues leaving it in with a healthy LP?

 

[DPKetchum]

The old lift pump(one on the engine)is the restriction. Think the in tank pumps if failed will still let the cp3 pull full and run until you get to a repair shop etc. All I wanted or would have liked to have seen was a aftermarket or factory lift pump that was longer lasting then the ones put on the engine on 2nd and 3rd generation trucks. I could cae if it pulls,pushes etc. Its ought to be a D. C. issue with a total retro fit on ALL 2nd and 3rd gen. trucks no matter mileage,age etc. before you stall where ever and when ever.

 

[Bob4x4]

Where is the restriction valve... in the hose? How to remove? Does it make sense to remove ahead of time in the event of LP failure or will it cause issues leaving it in with a healthy LP?

the size of the line(s) is the restriction.



Bob

 

[Bob4x4]

The old lift pump(one on the engine)is the restriction. Think the in tank pumps if failed will still let the cp3 pull full and run until you get to a repair shop etc. All I wanted or would have liked to have seen was a aftermarket or factory lift pump that was longer lasting then the ones put on the engine on 2nd and 3rd generation trucks. I could cae if it pulls,pushes etc. Its ought to be a D. C. issue with a total retro fit on ALL 2nd and 3rd gen. trucks no matter mileage,age etc. before you stall where ever and when ever.

Have you seen 05's running after the lift pump failed? Or unplugged the power to it and run it?



Bob