Installing Fuel pressure gauge
 

Need help 99 dodge whats the right way or right location to install the senor for the fuel pressure gauge tap into the Pump or can tap in into a spot where fuel filter is with a banjo nut , or over by the fuel filter supose to be a 1/8 in pipe plug??? kind of lost cause i wanna make sure i get a good reading please help me out Thanks

I like to see them in the banjo bolt that supplies the VP with fuel. That way you know exactly what is available at the pump. Anywhere else and there is a possibility of a false reading of what is at the pump.

Mine is in the tapped banjo bolt at the VP. You can tap into the top of the fuel filter housing also but as stated above the most accurate reading will be at the VP itself.

can u get a pics a of yours where its tapped into the banjo i just did mine easy way and tapped in on top of the filter housing .. but i didnt have another banjo fitting to tap into the vp !..

I would strongly suggest you get rid of banjo bolts everywhere.

Go to Vulcan Performance and get their kits.

(For 98 1/2 to 2002 Dodge - see:
Draw Straw II 1/2 in. draw tube and 1/2 in. pushlock fitting

The line between the fuel filter and the VP pump has great provisions for adding the fuel pressure gauge. The elbow fitting (far better flow than a banjo bolt) also has a 1/8" NPT threaded tap. Get a 12" long grease gun hose and thread one end into the elbow fitting (use Teflon goop, not teflon tape). At the other end of the grease gun hose - put a "T" - one side of the "T" - screw in the fuel pressure sender. On the other side of the "T" - screw in a pressure switch that has Normally closed contacts that OPEN if the pressure is greater than 5 psi.

With the above, you have better flow to the VP pump, you mount the sender away from the block (vibration isolation), and you can wire in a Red Light that comes ON if the fuel pressure drops below 5 psi to let you know of a possible problem!

http://i121.photobucket.com/albums/o...ng/dodge12.jpg
http://i121.photobucket.com/albums/o...ng/dodge11.jpg

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Thats Where i put my fuel pressure Sensor its that a bad spot i was told by someone else it will read the same ?

when you add a fass or airdog you will need to move it. it works fine where it's at.

Putting a fuel pressure sensor at the top of the fuel filter is great if you want to know the pressure at the fuel filter.

But you will loose some pressure as the flow works through the banjo bolt at the bottom of the filter, along the fuel line, and then at the banjo bolt on the VP44 pump.

Think dynamic, not static! Static - fuel pressure will be the same at multiple locations. But when fuel is flowing to meet the highest demand, the pressure drops at various locations will become greater - and failure to measure the pressure accurately (i.e. - where you are most concerned - at the input to the VP44 pump) means possible problems!

Replacing the banjo bolts is one of the least expensive things that can be done to improve fuel pressure/fuel flow to the VP44 pump - and it gives you the benefit of being able to get a better pressure tap to accurately measure fuel pressure. I can't stress enough that doing anything else is a compromise that should not be made!

I have attached photos of my installation.
Note that the grease gun line allows me to mount the safety switch and fuel pressure transducer over near the wheel well, below the air input heater relays.

Where can I get this fuel hose?
 

THanks for the great post. Where can I buy one of those fuel lines that go from the filter to the VP, I have an 05 Cummins.
Thanks you.

Check with Vulcan...for their "big line kit".

Others might offer similar products ...so shop around if you want ...but I got mine from Vulcan.

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But ...let me do a sanity check ....

You have a "Common Rail" system (CR) ...and don't have a VP pump....and I am unfamiliar with the details of the CR, so a Big Line kit might not fit your 05 truck.

I have read that the pre-VP systems (12V with P7100 pump) - the lift pump is engine block mounted/mechanically actuated, and the P7100 is 'bullet proof' and the P7100 won't be 'killed' if the lift pump dies.
I heard that the CR systems are similar in that a lift pump failure doesn't result in a very expensive repair ....while the 98.5 to 2002 24 Valve 2nd Generation Cummins - if the lift pump dies ....the VP can be damaged fairly quickly - and a nominal $200 - $400 repair of lift pump has added onto it a $1200 to $1800 lift pump replacement...so the people with VP systems need to be extra sensitive to lift pump pressure to the VP ....while the 12V and 3rd generation Cummins owners don't need to worry so much.

BUT - here is a link to the Big Line Kits ...
http://www.vulcanperformance.com/category-s/182.htm

THanks vineyardm I did do some research, it took some time to find a good one with all thats out there.

These guys have one for the 98.5-07 Cummins for $45.

Cummins Performance Parts CPP Big Line Filter to Injection Pump Kit w/ fuel pressure access 98.5-07 :rocking:

I would never have though to upgrade this part but I want to run a fuel pressure gauge since I will be running WVO soon.

How difficult is it to do one of those setups?

I'm confused.....He already gave you a link for the exact same kit for $35....?