Stock lift pump....time vs. miles
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Joined: Feb 2003
Posts: 1,915
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From: Beaverton, Oregon
With just under 100k miles I had my at the dealer to have it checked out prior to the warrenty going out. Mine was putting out less than 5%, they wanted $1200 to install an intank model. NOT
I bought a new one from E-Bay and installed it myself, I also installed a BD Low Fuel Pressure light. It also appears that the new pump is NOT performing up to standards because the light stays on most of the time. It might have to do with the use of 100% Biodiesel, so I am going to install BD lift pump as soon as it shows up. This shoudl ensure that I get a tleast 10PSI pressure at all times.
Get rid of your OEM pump ASAP if you don't it can kill your HPCR pump if you don't.
I bought a new one from E-Bay and installed it myself, I also installed a BD Low Fuel Pressure light. It also appears that the new pump is NOT performing up to standards because the light stays on most of the time. It might have to do with the use of 100% Biodiesel, so I am going to install BD lift pump as soon as it shows up. This shoudl ensure that I get a tleast 10PSI pressure at all times.
Get rid of your OEM pump ASAP if you don't it can kill your HPCR pump if you don't.
Registered User
Joined: Apr 2007
Posts: 316
Likes: 6
From: Illinois
1) What are the advantages/disadvantages of running a belt driven lift pump???
2) Does HP suffer at all?
3) What do these kits sell for & how hard are they to install?
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Joined: Aug 2007
Posts: 478
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From: Canal Winchester, OH
Registered User
Joined: Apr 2007
Posts: 316
Likes: 6
From: Illinois
RADSHOOTER -This thread might be of further help...
https://www.dieseltruckresource.com/...d.php?t=152569
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https://www.dieseltruckresource.com/...d.php?t=152569
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Registered User
Joined: Dec 2008
Posts: 479
Likes: 1
From: Bashaw Alberta
If your gettin that many miles outta one youre lucky, ive heard of alotta in tank pumps lettin go at alot less than tha for mileage, mine was gettin really weak at 50000 miles and 1540 engine hours so i had them put a new pump in, i'll give it one more chance in tank then i'll stick a FASS in it when im outta warranty
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Joined: Apr 2008
Posts: 302
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I replaced mine on my 03 in Dec. 08 at 110,000 miles. It was still working ok I thought but after replacing it with a AD 100, I could tell I had been low on fuel pressure at higher rpm's. The airdog was worth every penny and now I don't worry about when the stock one is going to die and leave me stranded.
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Joined: Mar 2004
Posts: 4,463
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From: Ila georgia
I knew two 03 trucks that were traded in with mileage in the 150k range and still had OE lift pumps.Neither one of those trucks had anything go wrong.Two sets of tires and filters/oil etc.
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Joined: Dec 2004
Posts: 557
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From: STL Missouri
The day I decide to go with an aftermarket lift pump, it will be a mechanical one. I have been holding off replacing the factory pump (currently at 90k trouble free miles) because the "electric solutions" out there (at the time) where less then perfect. To be honest I really suspect the these aftermarket electric pumps have no more life expectancy then a factory unit the only real advantage is that they "flow through" when they fail and the canister mounted pumps don't, and the AM LP's can make more pressure for added fueling purposes (that's the only advantage I see).
The CP3 is capable of pulling fuel through an open line, don't forget that the duramax CP3 (very simular to the dodges) don't even have a factory LP, it draws all it's fuel.
Here is a thread I started a while back and the information was amazing that came out of the responses and the funny thing was that NO ONE that makes / sells aftermarket LP's piped in or disputed the information...
https://www.dieseltruckresource.com/...d.php?t=227652
Sure the factory LP's fail, but so do the aftermarket electric ones but what is the failure rate 1 out of every 100,000 on the factory ones; and 1 out of every 2,000 on the aftermarket (I am really just guessing about the failure rates, but I see numerous post on here about AM LP failures)??? Really doesn't look like a solution/fix to me when it comes to realibility... Maybe some of them come with lifetime warrenties, but so did my "discount auto part store alternators" and sure enough they would be happy as could be to give me another one anytime the "lifetime one" failed
... but in the end I was the one with constant greasy hands and a broken car all they had to do was pull a new one out of a box...
I am sure my response will get hammered on but that's OK. You and I are in the same shoes (factory canister pump with decent amount of miles). What I am doing is budgeting for a mechanical pump, but NOT holding my breath until I get one. If I had a in-tank pump then I wouldn't even be concerned until I started having "high performance" issues due to lack of FP. To be honest I would love to see the amount of stock 04.5+ trucks that don't even have working LPs and people don't know it because the CP3 is pulling it from the tank...
The CP3 is capable of pulling fuel through an open line, don't forget that the duramax CP3 (very simular to the dodges) don't even have a factory LP, it draws all it's fuel.
Here is a thread I started a while back and the information was amazing that came out of the responses and the funny thing was that NO ONE that makes / sells aftermarket LP's piped in or disputed the information...
https://www.dieseltruckresource.com/...d.php?t=227652
Sure the factory LP's fail, but so do the aftermarket electric ones but what is the failure rate 1 out of every 100,000 on the factory ones; and 1 out of every 2,000 on the aftermarket (I am really just guessing about the failure rates, but I see numerous post on here about AM LP failures)??? Really doesn't look like a solution/fix to me when it comes to realibility... Maybe some of them come with lifetime warrenties, but so did my "discount auto part store alternators" and sure enough they would be happy as could be to give me another one anytime the "lifetime one" failed
... but in the end I was the one with constant greasy hands and a broken car all they had to do was pull a new one out of a box...I am sure my response will get hammered on but that's OK. You and I are in the same shoes (factory canister pump with decent amount of miles). What I am doing is budgeting for a mechanical pump, but NOT holding my breath until I get one. If I had a in-tank pump then I wouldn't even be concerned until I started having "high performance" issues due to lack of FP. To be honest I would love to see the amount of stock 04.5+ trucks that don't even have working LPs and people don't know it because the CP3 is pulling it from the tank...
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Joined: May 2004
Posts: 569
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From: Mountains of Western NM
I replaced a working factory filter mounted lift pump at about 50,000 miles with an aftermarket system to avoid any problems. At 80,000 miles I changed the fuel filter and found that the AM lift pump was dead. Needless to say I was not a happy camper, took half a day to find a replacement pump on a weekday. Currently have a Holley Blue running but need to find a back up pump and put in a pressure guage or light.