Lift pump replavement advice

[petersonj]

What warranty did you have that covered you at 87,000? Mine was 70,000 as I recall and I lost my transmission at 74,000 (NV5600).

Factory warranty on the VP44. It was done in August of 2005. Bummer about your NV5600 transmission - they are tough transmissions.

If I am understanding your posts correctly, are you on your third VP44 injection pump?

My only concerns with frame mounted pumps is exposure to damage. We tend to get into some pretty bad situations where stuff under the rig could get damaged (going in the ditch or snow banks can do that. Messed up my 4WD actuator).

You could do like Mopar1973Man did and install the lift pump behind the rear axle. He had the same concerns as you and he has had no problems with his installation.

Regarding a gauge --- should I just purchase the adapter and splice it in my fuel line somewhere (where?) and then run the connection through the firewall somewhere? More details would help.

Whether a gauge or a pressure switch, the port should be at the inlet of the VP44 injection pump. A snubber is highly recommended otherwise a gauge or pressure switch will fail prematurely due to the high frequency pulsations from the injection pump. An electric fuel gauge will keep the fuel out of the cab - the sending unit will be in the engine compartment.

- John

 

[DavidC]

Mount the sending unit using a 18" grease gun hose then tie the sensor out of the way. Worked on mine for a long time.

 

[Bunchgrass]

Factory warranty on the VP44. It was done in August of 2005. Bummer about your NV5600 transmission - they are tough transmissions.

If I am understanding your posts correctly, are you on your third VP44 injection pump?



You could do like Mopar1973Man did and install the lift pump behind the rear axle. He had the same concerns as you and he has had no problems with his installation.


Whether a gauge or a pressure switch, the port should be at the inlet of the VP44 injection pump. A snubber is highly recommended otherwise a gauge or pressure switch will fail prematurely due to the high frequency pulsations from the injection pump. An electric fuel gauge will keep the fuel out of the cab - the sending unit will be in the engine compartment.

- John

No -- 2nd VP44 and trying to avoid a 3rd.

 

[Regcabguy]

I've got an '00 with 280K on it and lost the lift pump/VP about 100K back and was replaced with same (as I recall). I'm starting to see some harder starts (it doesn't just fire right up after the first few revolutions) and am concerned that I'm losing the LP again. So I began looking for something simple and reliable to replace it with and have been overwhelmed with the options and pros/cons - intank or not, need to change fuel line size, switch out LP and IP .....

This is a non chipped work horse that I'd like to keep running to pull the Gen 4 out of the ditch. I'm past my wrench bending days and just need this rig to fire up and run when it's needed. Is the DRP the best option? Brand?

Thanks for your help advice. Are there threads here or on the web about installing a fuel pressure gauge?

Geno's garage has a Carter frame mounted conversion kit. Easy to swap out and the carter pumps are cheap.

 

[Gearclash]

I’m going to be repeating the same advice others have given but I think it's worth it. You NEED to get a fuel pressure gauge on your VP44. Not a light, a gauge. I know for a fact a pressure gauge saved me from an early VP failure.

 

[Joe Mc]

tee'd in after the filter I imagine.

https://www.genosgarage.com/product/FPT-1-2/fuel-fittings-and-hoses
I suggest installing this (whichever size 3/8, 1/2 needed) and get a fitting to go into the tee that you can cap off after use. I use this Tee to connect a mechanical gauge to and run the hose from Tee to gauge tape gauge to windshield "only" to confirm pressure directly out of pressure regulator (GFS-392 system) and to compare to sending unit at fuel line to in-cab gauge to see if it reads close, if not dead on. Then disconnect and cap tee for future use. Not a fan of having a "live" in-cab source of fuel - I think that is supposed to go to the injection pump etc. and "not" to the operator inside the truck, right? LOL

 

[Brian Neal]

I went with the AirDog Raptor, and after 7k it conked out right in front of the grocery store main entrance in the middle of the day...not frustratingly embarrassing at all...apparently, something went wrong with its electric motor...since I registered it, they sent one asap no questions asked, but I didn't even bother asking about the tow truck charge I ate...I drained the fuel filter and removed the 2 bolts to get the filter out of the way, and WOW talk about making the job easier...when I swapped fuel pumps out, it took about an hour, and I was not in a hurry. l can say that the Raptor delivers better power on the highway than the stock Carter and fuel economy is only reduced by not even 1mpg.