Greeting Ram owners:

In looking in the fourms on fuel pressure, I can not find a thread
on 2003 Ram. My question to everyone is simple and easy.
Is there a thread for 2003 fuel pressure or can someone please
give me the range of pressure my truck needs?
I installed a fuel pressure on the truck about 15000 miles ago.
back then it was 7 pounds, now it is reading 6 pounds.
The pressure will not very at all at any speed or weight that I pull.

Thank You
Ram_Kevin


2003 1 Ton SWB no mod, pillar post gauges- fule pressure-turbo boost- turbo temp
Tow 11040 RV

 

might want to think about a r/r on the lift pump... if your engine is the same as the one in my 99 which I believe it is, you should look for around 15psi at idle no less than 8-10 at wot

 

No he is common rail, pressure is different, don't know what it is. Try getting the info from Scotty, he should know.

 

I've seen posts about pressure dropping to 0 at WOT. If yours is maintaining 6psi then you should be alright but I would be concerned if it stays at the same point all the time. It should drop some at WOT....

 

I installed a fuel pressure gauge, post filter, and I am reading 9 lb. WOT it goes down to 7.5
Hope this helps.

 

This is posted on another site. The poster is a very experienced diesel mechanic and has run every generation of Cummins pickups - from 89-04. This is his take on the FP guage on a CR engine:

"My two cents on installing a fuel pressure gauge on a third generation truck is, "do not waste your money."

The common pressure rail injection pump does not actually depend on the lift pump for pressure, so will run with zero pressure to the pump. In fact, Duramax installed the same Bosch licensed systems for years with no lift pumps!

Cummins installs them so the injection pump does not lose its prime or start dry. Duramax now does the same thing. However the OEM lift pumps are itty bitty 12.5 psi output things that frequently drop down to around 6 or less and scare the dickens out of the driver.

Dodge will not warranty a third generation lift pump when it is only putting out 8 lbs, so why install something that will just cause you to worry when you drive on a hill?

If you get to the point that warranty is not important, then get a FASS pump and filter combination and order a pressure gauge from the distributor at that time. It will save you money on a useless gauge, and a lot of stress from worry when the OEM lift pump frequently drops below 9 lbs."

Just thought you guys might be interested.

 

Not that I am paranoid, but I wonder if the system can pull through a bad lift pump.

 

You have every right to be paranoid, the inlet on the Dodge lift pump is (ONLY!) .200" and the filter head is restrictive. Then you have tiny lines and 12mm banjo bolts........ My 2003 Dodge service manual spec's the stock lift pump pressure at a MINIMUM of 11.5lbs. My 2004 manual is silent on pressure.

The Duramax uses a similar CP3 high pressure pump but has 1/2" lines plumbed from the tank unit to the engine with larger banjo bolts and swept fittings. Totally different setup then Dodge (much better flow) but even the Duramax guys have discovered the added performance of a lift pump with chip or fueling enhancements.

I've checked a few CTD CR's that were pulling a vacumn on the stock lift pump with just a TST PMCR. Zero to two lbs is common at higher throttle settings but during cold weather the plastic lift pump just can't get the job done. We are selling almost as many AirDog Fuel Preporators for the common rail as we are the VP44. HTH's, Larry Crawford

 

Greeting:

I have been looking into 2 units- FASS and Fuel Preporator. My new question is - What is the differance between the two beside price. I found FASS for $555.00 with free shipping and Fuel Preporator for $679.00 shipping??.
The only thing that I see different is the FASS does not have a clog filter indicator that mount inside the cab. What justifies an increase of $124.00.

Thank You
Ram_Kevin

2003 1 Ton SWB no mod, pillar post gauges- fule pressure-turbo boost- turbo temp 6 speed
Tow 11040 RV 5th wheel

 

The FASS has a port for a pressure gage or warning sensor.