Lift Pump Fuel Pressure Monitoring/Monitor

[boonhauler]

I recently had a lift pump go out on me stranding me in the middle of nowhere. I've decided to install a Fleece PowerFlow lift pump hoping that it's more reliable than a run-of-the-mill aftermarket pump.

I'd like to monitor my lift pump fuel pressure. I have a Smarty Touch installed but there's no PID for fuel pressure.

Just wondering if any of you guys have any idea on how I could accomplish this monitoring.

As always, thanks in advance,

Carl

 

[AH64ID]

I had a ISSPRO EV2 0-15 psi gauge to monitor my LP pressure.

 

[boonhauler]

Thanks John

I'd really like to have a digital read out so I'm hunting around a little bit more ....

 

[Darkbloodmon]

I use a full Isspro EV2 system for Fuel pressure, Rail pressure, Boost, EGT, and Trans temp. If you don't find a digital read out i'd recommend Isspro over Autometer the build quality is much much better and worth the price.

 

[boonhauler]

I found this Digital Gauge at GlowShift. I've got a few different mounting options coming as well.

To be continued .... lol

 

[Grumpy8811]

I recently had a lift pump go out on me stranding me in the middle of nowhere. I've decided to install a Fleece PowerFlow lift pump hoping that it's more reliable than a run-of-the-mill aftermarket pump.

I'd like to monitor my lift pump fuel pressure. I have a Smarty Touch installed but there's no PID for fuel pressure.

Just wondering if any of you guys have any idea on how I could accomplish this monitoring.

As always, thanks in advance,

Carl

back in the day my employer retrofitted some of our 24 Valve Bluebirds with a low fuel pressure warning light..
basically it amounted to a 12 psi pressure switch in the supply side after the primary filter and a red warning light on the dash and a few feet of wire.

 

[AH64ID]

back in the day my employer retrofitted some of our 24 Valve Bluebirds with a low fuel pressure warning light..
basically it amounted to a 12 psi pressure switch in the supply side after the primary filter and a red warning light on the dash and a few feet of wire.

There are some low psi kits out there and it’s easy enough to make your own, but they aren’t really that useful on a HPCR. The CP3 is rated for -5 psi to + 15 psi inlet pressure. The OEM pump moves 90 GPH+ at 0 psi, so plenty of flow for the CP3. It’s not uncommon to pull the OEM lift pump down to ~3 psi under full load on a tuned motor, maybe even a little lower depending on filter status.

So what pressure would you run on a HPCR? I never came up with a good one with a readily available switch, so a pressure gauge went in over a pressure light.

 

[Grumpy8811]

There are some low psi kits out there and it’s easy enough to make your own, but they aren’t really that useful on a HPCR. The CP3 is rated for -5 psi to + 15 psi inlet pressure. The OEM pump moves 90 GPH+ at 0 psi, so plenty of flow for the CP3. It’s not uncommon to pull the OEM lift pump down to ~3 psi under full load on a tuned motor, maybe even a little lower depending on filter status.

So what pressure would you run on a HPCR? I never came up with a good one with a readily available switch, so a pressure gauge went in over a pressure light.

I thought I was replying to a regular 5.9 question.. my bad.

a gage is nice for somebody who knows what they are looking at, in our case it was for our Operators who are far more prone to notice a red warning light even if they don't know what it was for.

realistically, on the rear gear train 6.7 engines they don't even use a lift pump, because the gear pump built into the CP3 will transfer fuel without a lift pump, so you probably don't even need to know lift pump pressure.

I never found the reason only the 6.7 front gear train engines use a lift pump, while using the same CP 3 pump as the more commercial variants with the rear gear train . Maybe it has something to do with power output as most of the commercial engines don't have the same power ratings as the Ram engines...

 

[CVR222NV]

Didn't Mopar come out with a low-pressure warning kit that taps into the CP3 and ties into the lights on the dash? I added one to my truck but also have an ISSPRO gauge as well. I replaced my OEM lift pump with one from NAPA and it reads right at 15 psi which I understand is max for a CP3. I would not have known I was at max without the gauge.