Looking for some advice on what might be wrong....here's the scenario:

When I take off from a stop:
The engine/tranny seems to be fine accept for occasional sputter during the acceleration. Not necessarily between gears (AT). Its kindof like the truck acts like I let off the petal and then back on it (when of course the petal remains in the same position)

When I am cruising at 30-40mph:
As if I were about to pass a car, I give the petal a good stomp to get up to speed up and it shifts down to 3rd (or 2nd depending on WOT or not) just fine. The problem lies in complete lack of power. It literally takes 3 or more seconds for the turbo to climb before the truck get moving with increased speed.

When cruising at 50mph:
While in O/D, then I go WOT- it shifts down to 3rd and locks just fine, but no power.-an occasional puttering is heard when I'm next to something that rebounds my exhaust. The day my ALT. blew up was the same day I went WOT from O/D (52mph) and the RPM's went sky high before it shifted into 3rd and then instantly dropped to idle. I let off the petal and returned to a cruise at 50mph. I don't know if that will help but like i said it only happened once, then I replaced my ALT. and it hasn't since.

My main concern with all of this is the occasional puttering during acceleration in the engine and the lack of power. It feels like its starving for fuel or a damaged VP (I've checked my fuel filter&oxy. on the Air Dog and their both clean)

Any ideas? -

die2live's Sig:

'99 2500 5.9L XCab, Long Bed, 4x4, Leather, Auto, some little green box that says quadzilla, BHAF, (STOCK!)

1st /You have a fuel pressure gauge,if so what is it.2nd/you may want to check your APPS sensor,do a reset if that doesnt help you may have to adjust it.How many miles are on the truck/tranny. -

turbo20psi's Sig:

A little here a little there.



Diesel Dawgs Performance
Unleash the Dawg!!
828-399-1556
www.DieselDawgs.com

I havn't recieved the gauges I ordered from Luke yet, they should be hear any day. 200k miles, and I just read the APPS reset. I will do that tomorrow. It still sounds/feels serious though.... -

We will start with the basic and go from there.Did you unplug the quadzilla and see what happen to.Luke diesel is were I buy most of my stuff to your in good hands. -

Fuel pressure gauge is mandatory. Get one on ASAP.

An educated guess points to the VP-44. Scan for codes. Report back here. -

Dr. Evil's Sig:

98 12V quad cab 4X4 AND 2001 24V quad cab 4X4

1. Get fuel pressure checked.
2. If bad, DO NOT DRIVE.... Replace with Raptor or FASS / AirDog equivalent.
3. Check for codes and report to this forum
4. If you have fuel, your VP is heading south unless you notice the RPM gauge hop up and down when the problem happens. This could be a cam sensor, but I'm not all that confident.

My truck did the same thing on four accounts. All VP failures. They always seem to go out slowly on me.... -

MacsDieselStore's Sig:

1999 Dodge 3500 Dually 4x4: ATS billit transmission, ATS CoPilot, PDR mid-range cam, 100hp sticks, Edge level 5, FASS 150, HR VP44, Propane injection, Banks 5' exhaust, Banks high flow intake, 1500 watts and 12 center sub, 4:10 gearing, Amsoil All Around

Just waiting on a new ATS turbo and I'm done!

I agree with Evil - VP44 but that's only a guess at this point. -

Wyatt Earp's Sig:

Wyatt Earp
Smoke show: 2002 Dodge CTD
Daily Driver: 2003 VW Golf TDI
Other New Car: 2008 MB R320 CDI - Diesel Luxury

OK, I just tried the APPS reading/adjustment and had no luck! The instructions I read on here were apparently not for my truck.

can anyone give some advice on the reading/adjustment for my '99?

The #23 pin read .8 volts although I have no way to adjust it- there are 4 small starbit screws holding on the metal plate in which the 3 large wire connectors are plugged into. This metal plate is no removable (sealed on).

I'm at a loss here.

By the way, my Fuel press. gauge hasn't arrived yet....still waiting! -

Do you have access to a OBDII scanner? -

aounds lke the vp is going down south i also order my parts from luke he will take care of u -

hotcummins's Sig:

12v 5x18s injectors 191 delivery valves 3k springs aroura5000 single i built the all billet tranny and ats 5 disc converter #100 fuel plate fire ringed arp head studs timing 22.0 degrees tabbed kdp quick spool cam and exhaust manifold 5 inch turbo back exhaust w/ 6 inch tip afe intake k&n cold air water meth injection airdog2 165








http://www.dieseldawgs.com/

Dr. Evil- i do not have access to an OBDII scanner, although my mechanic might...what would this do?

I couldn't find the APPS tonight but I found out it was just up/left from my VP44, so I'll try and adjust tomorrow.

How do I find out if it is the VP?

---AutoMerged DoublePost---

Dr. Evil- i do not have access to an OBDII scanner, although my mechanic might...what would this do? -

In most cases if the VP-44 is dead it sets a code in the computer - you need an OBDII scanner to retrieve this code(s). If your mechanic doesnt have a scanner - it time that you find an actual "mechanic".

This problem sound much like the "dead pedal" associated with VP-44 issues.

If you are going to continue to own this truck you need at a bare minimum, a fuel pressure guage and an OBDII scanner. If you dont have these two items - buy yourself a monthly bus pass.

Missed this the first time - do you or do you not have an Airdog? -

I do have a AirDog 100, and yes my mechanic laughed when i asked him if he has on, he does have one. And the gauges haven't arrived yet! (Luke said: any day.... )

Also, I accomplished the APPS readjustment today (was .8 called for .51-got it flawless to hold at .52! )

On top of it all, I noticed my fuse was blown on my Airdog wire at the battery. I put a new on in and it blew after a short test drive. I started researching threads and found a phone # for Airdog and they said to take the plate off the pump and see if it was worn on the inside of the plate- It was! warn BAD. (apparently this is the cause of blown fuses?)

He's gonna hook me up with a new pump.

Would this have caused the "no power at WOT, and occasional puttering?

(I'm parking the truck until I get the pump.) -

No fuel pressure = No Power

Seems like you have more than likely found your problem man.

Luke -

lukesdiesel's Sig:

Diesel Dawgs Performance

Unleash the Dawg!!

828-399-1556

www.DieselDawgs.com

Expandit Exhaust Specials

6.7 Cummins XRT Race Tuner

HP Race Injectors

Cool. Good call on the airdog - glad to see they are standing by their product.

Also good idea to park the truck - no need to risk buying a new injector pump.

Even though you have an Airdog - the fuel pressure guage is still a good idea just in case. In this case, you would have immediately been able to see your pump failing. -