Engine/Transmission (1998.5 - 2002) Fuel pressure point after AirDog?!?

[JayStraight]

Okay, I just finished installing the AirDog with the fuel line running all the way to the VP-44, next on the list (to monitor fuel pressure) is an Edge Juice with Atittude. After looking at their online instructions, the fuel pressure sensor hooks up at the same spot as the fitting for the AirDog (no banjo bolt).

So how do you get the two to work together?!?!?!?!?!?!



Thanks,

Jay

 

[Mishkaya]

I just used a fitting inline like this one:

#ad


mishkaya

 

[Davcruz]

There is a fuel pressure port on the side of the Airdog unit that I used.

 

[JayStraight]

Mishkaya, ya got a part number for that little jewel???



I see it's a Summit Racing part... .

 

[blacksheepdiesel]

JayStraight,

Hey dude! Way to go on the AirDog!!!

Godspeed,
Trent

 

[JCyrbok]

I just used a fitting inline like this one:

#ad


mishkaya

I used the same kind of fitting, got it from either summit or jegs, can't remember. T'd in to the fuel line about 12 inched before the VP inlet.



J-

 

[Wyomingcowboy]

Vulcan sells one too.

 

[JayStraight]

JayStraight,



Hey dude! Way to go on the AirDog!!!



Godspeed,

Trent

Well I've got a long way to get to your 300,000 milestone, let the fun begin!!

I've gotta say, it runs like a new truck w/o hesitation or lack of power. After only owning the truck for 4-months I didn't have anything to compare it to. But now it runs like I think it should!!!

 

[JayStraight]

I used the same kind of fitting, got it from either summit or jegs, can't remember. T'd in to the fuel line about 12 inched before the VP inlet.



J-

But I could mount it right on the VP-44, right?? The AirDog runs all the way to the injection pump with a swivel fitting that look like it would screw on either end of that fitting... ... does that make any sense?

 

[Mishkaya]

Mishkaya, ya got a part number for that little jewel???



I see it's a Summit Racing part... .

This is the part #EAR-100196ERL for the one I have I believe, but there are plenty of options really. Also make sure you have the fittings that go in the line as well.

Earl's Performance 100196ERL - Earl's Performance Pressure Gauge Adapters - summitracing.com

mishkaya

 

[Mishkaya]

But I could mount it right on the VP-44, right?? The AirDog runs all the way to the injection pump with a swivel fitting that look like it would screw on either end of that fitting... ... does that make any sense?

You actually want it a bit farther away from the VP (right next to the firewall is where I have mine) as the pulsations from the VP44 tend to kill senders (as well as mechanical gauges) when they are plumbed that close.

mishkaya

 

[JayStraight]

You actually want it a bit farther away from the VP (right next to the firewall is where I have mine) as the pulsations from the VP44 tend to kill senders (as well as mechanical gauges) when they are plumbed that close.

mishkaya

That makes sense to me BUT Edge's online instructions say to mount the sensor on the banjo bolt...

***Copied and pasted*** (couldn't capture the picture)



"In order to insert the fuel pressure sensor, the Test Port Fitting must be removed

from the VP 44 housing (See figure 18) and replaced with a banjo bolt (provided)

that allows the pressure sensor to be coupled to the fuel line. Connect the Fuel

Pressure Sensor to the Banjo Bolt before installing the assembly"

 

[Mishkaya]

That makes sense to me BUT Edge's online instructions say to mount the sensor on the banjo bolt...

***Copied and pasted*** (couldn't capture the picture)



"In order to insert the fuel pressure sensor, the Test Port Fitting must be removed

from the VP 44 housing (See figure 18) and replaced with a banjo bolt (provided)

that allows the pressure sensor to be coupled to the fuel line. Connect the Fuel

Pressure Sensor to the Banjo Bolt before installing the assembly"

They just want you to install it there because that way they don't have to include any other additional hardware would be my guess. I do know after browsing these forums for years now, that most senders are not very happy installed at the VP44. As far as I am concerned, as long as your pressure sender is post filter, you are good to go.

mishkaya

 

[JayStraight]

They just want you to install it there because that way they don't have to include any other additional hardware would be my guess. I do know after browsing these forums for years now, that most senders are not very happy installed at the VP44. As far as I am concerned, as long as your pressure sender is post filter, you are good to go.

mishkaya

Ahhh, why didn't I think of that I keep forgetting that we're only talking about 16psi, I can put a fitting anywhere in the feed line from the AirDog and not upset the delicate VP-44 Thanks for your help and the reality check Mishkaya!!!!

 

[blacksheepdiesel]

JayStraight,

I installed the "tee" right at the inlet to the VP and still have the same fuel pressure sending unit after 300,000 miles. My gauge does not pulse and I have no isolator. It is a Westach electrical gauge.

Install it at the VP and if you have pulsations you can then move it.

Godspeed,
Trent

 

[Bob Cochran]

I used Aeroquip fittings and stainless steel line and mounted sender to the firewall. I also used an isolator but I think when I install my new sender for the Adrenaline will keep it on the firewall but remove the isolator and not necessary. I think less parts are best when possible in all installations. Just the way I roll!!!

 

[Davcruz]

So what is wrong with using the FP port on the Airdog block. Is that not what the thing is there for?

 

[blacksheepdiesel]

If you measure psi at the inlet of the VP then there can be almost nothing left that can go wrong before the fuel enters the VP. Measuring farther upstream from the VP leaves the fuel hose between the sending unit and the VP vulnerable to leaks, kinks, ruptures, etc. The chances are slim that something will go wrong, but if I can eliminate possibilities why not?

Godspeed,
Trent

 

[Davcruz]

OK, I will concede that it would not show you some sort of blockage with the fuel line, but that has got to be a rare occurrence, particularly when you use the big 1/2" line kit that comes with the Airdog FP100/150 systems and when you remove the factory filter assembly.

 

[JayStraight]

I'm sure you could use the port in the top of the AirDog block for a fuel pressure sending unit..... they (PureFlow) use that for the optional low pressure warning light kit. It's just easier (I hope) to tap the hose where the Edge wants you to tap for pressure, at the VP-44.



I guess once I get the Edge juice w/attitude, I'll go right at the injection pump for pressure then if the sending unit gets screwed up I'll move further back along the fuel hose.



Thanks to all for the advice and suggestions!!!