Chilidog

I have a 2001 2500. I bought it from an old trucker who kept pretty good records. It looks like he replaced the fuel pump in maybe 2007, then injection pump in 2010 (along with a new fuel pump). Then in 2011 he replaced the injection pump again with a rebuilt unit. I'm thinking I might want to get that lift pump replaced asap with a fass direct replacement. My question is this: I'm on a long hiatus traveling the US and pulling a camper. If the FASS pump happens to go out, I can't wait around having to send it in and wait on a replacement. So are any of the pump from the auto stores (O'Reilly, AutoZone, etc.) any better than this original pump?? Would it be better for me to convert it to a pump in the tank? Can I add another pump and have 2 pumps? Anyone with any advice or help on this matter would be greatly appreciated. I cant afford $3000 (nor do I want to spend it) to replace the injection pump.

Thank you!!
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nkennedy

I used to have a 2001, and I just had the stock Carter with a big line/relocation kit. Carried a spare pump, and never had problems.

AlpineRAM

Do not go the in tank route- it's a pain in the *** to replace (even though it's slightly more reliable than the "dry" pump).

My opinion is that it should be priority 1: monitor the system (fuel pressure gauge) and then assure sufficient pressure- meaning that you stop the engine if there is a lack of pressure and then restore the fuel pressure if needed. (I did a 40 000 hour service of a 24V = 1.2million miles at an average of 30 mph for your truck with the first VP44 and a gravity feed system).

I usually use some aeroquip clone pumps from china that cost less than 50 $ and carry a spare or two- but I invest money on monitoring the fuel pressure and flow.
The VP44 on the ISB5.9 uses about 1/3rd of the fuel at max torque for burning and the rest for lube&cool in it's normal operation- you will not notice any lack of power until you try to out-pull someone with 2/3rds of your fuel flow lacking if you do not have a fuel pressure gauge.
If you want to make your life simple- get a pressure gauge, get a fuel pump with 3/8" hose connectors and monitor your pressure, if lacking change fuel filter and if necessary change fuel pump. Get something that flows around 90-100 gph and has the option to install 3/8" connectors.

SIXSLUG

I'd get a gauge and ensure you have the pressure needed to keep the vp happy, 10 psi minimum is my rule. Why are you worried about the FASS, they are rated to go like 20,000 hours or more....maybe you should replace a tire or u-joint to be safe too....I'm just saying you can't possibly anticipate the next item to fail on your truck.

leeboy

My FASS has been going forever , I have one of the first 3 they built . Good investment for stock replacement