Hey I just got all my Gauges installed on the a pillar and was just wondering what pressure my fp gauge should be at ive been told so many things it idles at around 14 and while driving around 10 but if you really get on it it drops to around 7ish is that what is should be doing since my vp44 is dying i want to get all working correctly before I have it replaced.

 

I wouldn't be comfortable at 7 psi. IMO it should not get below 10. Mine runs between 17 psi idle and 10 WOT.

 

I agree with Yarddog on the fuel pressure readings. However, if you’re going to replace the VP44 I would upgrade your lift pump system at the same time (most VP44 warranties require you to replace the lift pump anyways). Stock lift pumps, in the stock location, will fail over and over again; there are many ways to solve this problem:
1) Use a relocation kit to move the stock pump to the frame near the fuel tank so it acts as a pusher pump, about $70 from Geno’s Garage.
2) Relocate the pump, and add a big line kit to relieve the restriction of the factory banjo bolts and small lines, a Vulcan Big Line kit is $130.
3) Install a pusher pump in the frame and keep the OEM pump in the stock location, with or without a big line kit. You can use a stock pump, a Carter P4601HP pump, a Holey Blue, Aeromotive, etc, as the second pusher pump, $100+.
4) Add a FAAS or Walbro pump and big line kit. These bumps are the crčme of the crop and should last for years (this will be my choice, when I replace the VP on my ’01). These run about $400+.

Do some research on this forum, there are people who swear by each of these options. By the way, how do you know your VP44 is dyeing?

And welcome to the forum. . .

 

I know my pump is dying cause of the p0216 and the dead pedal and etc... and I already replaced the lift pump i dunno what the deal is with the low pressure

 

i recommend the warlbro, 18 psi at idle, 16 psi cruisin, 15 WOT, oh how nice it is.

but this is my recommendation, i bout this kit b/c my lift pump was starting to cut out and get weak, i could drop it to 0 psi easily, and i'd be cruisin down the road, at 6 psi and then it'd just drop to 0 psi out of nowhere.

but to me, 7 psi seems fine, no it may not be comfortable, but they say not to take it below 5 psi, and well, 7 is not below 5. so it's your call, but to me, i'd wait a little while longer.

 

Yup, your VP44 is on its way out for sure, sorry to hear. The reasons for low pressure include: restrictive banjo bolts with small diameter factory lines, location of the pump making it pull the fuel when it should really be pushing it, and possible low supply voltage to the pump. My lift pump just died, I replaced it with a Campaign pump, and the pressure was almost the same as before, about the same as yours. When my VP44 takes a crap, I’m going with a Walbro, in my opinion it’s the best you can buy, all be it the most expensive. Check out this thread, lots of good info here:
https://www.dieseltruckresource.com/...d.php?t=113805

 

Sorry to hear about your VP. I'd say look into getting a FASS system. Well worth the money. Gets your filter housing and pump out from the engine compartment. To me it works two fold - the VP like good pressure and cool fuel. FASS system is under the truck getting cooler air circulated around it all the time thus the fuel is cooler going to the pump and they're known for holding their pressure very well. A good system to keep your next VP44 going for a long time.

 

It seems most people have higher psi at idle and WOT than I do. Mine sits around 12 at idle and 10 at 70 mph. The lift pump was replace in June. (Stock pump) How would I know if the VP44 sufferd any damage while the lift pump was going bad. The truck seems to run fine.

Thanks

 

Your low FP with a new pump is likely due to the restrictive banjo bolts. Ditch them and use a fuel line kit, and you'll have no FP problems.

 

7 psi at WOT is fine. Don't worry about it. There are many VP44 applications in Europe that don't even use a lift pump, which means they run negative fuel pressure.

If your fuel pressure guage is bouncing, and needs to be snubbed to keep the guage from rattling, then you've got problems.

Most of the time the 0216 code is caused by either a high pressure chamber leak or timing piston siezure. The leak is the most common and will be either an o-ring, and/or diaphram failure. The diapram seals the high pressure chamber of the VP44 from the low pressure side, and the o-rings seal it. Lack of fuel pressure has nothing to do with either of these failures. Rapid fuel pressure hydralic fluxuations will get the o-rings and diaphram. Contamination can be a cause timing piston siezures.

Move the lift pump off the engine block to the frame, back by the tank, power it from a seperate power source, instead off the stock power from the ECM, use bigger fuel lines or enlarge the banjos, and the lift pump and VP will live long happy lives.

 

I can match that walbro just about...

15 @ idle, 13 @ Cruise, 12 @ WOT...

And I'm running a Vulcan Big Line Kit (129) and Carter Campaign pump (50)... Lot cheaper than a FASS or Walbro pump system if you low on funds...

I highly suggest going with the Vulcan Big Line kit and NOT Geno's kit... For one reason... The Geno kit only uses 3/8 hoses and doesn't get rid of the banjo bolts. Where the Vulcan Big Line uses 1/2 hoses and replaces all banjo bolts with new fittings

 

Will the big line kit void any warrenty.I got the intank retro fit pump and looking to get more fuel pressure

 

I was just wondering how long you’ve run the Campaign pump back at the frame. I’ve read that no matter where you put them, these pumps still loose pressure and go bad. I'm thinking of adding the Vulcan Big line kit with my Campaign pump, and if it doesn't last then get the Walbro.

Oh just to clarify, Geno’s Garage sells both the cheaper ($70) relocation kit with the 3/8” lines, and the full Vulcan Big line kit ($130) with 1/2” lines. I did notice that on Geno’s website they list the 1/2” hose (a blue hose) to be 250psi, but if you go directly to the Vulcan website they list the 1/2” hose (a black hose) to be 50psi, where did you get your kit, and are your hoses blue or black, are they rated for 250 or 50psi?

 

I had already installed the vulcan kit and gages after Dodge replaced the lp with an intank pump. At that time I had 11 @ idle 8.5 at WOT. This week those press. dropped by 1psi and filter change did not help. Today i installed the carter pump i had already bought from cummins on the frame rail. Now working in conjuction with intank pump, I see 25 at idle, 23 WOT. Looks like the best solution.

 

I have the Geno's relocation kit and campaign pump and never goes below 10 psi at WOT. Have 13,000 on the pump the last 5 months. So far so good.

But I really like the Aeromotive AE11203 ($165.00) it's on my veggie side and operates at 16psi at idle 12 psi at 65mph and won't go below 10psi at WOT. If and when my campaign pump dies, I'll be switching to this pump on the diesel side.
Q