Help: limp mode

[cafryer]

Hey guys just got my truck going after the dual pump setup now it is going into limp mode do the pumps have any thing to do with it?

 

[delong_1]

What's rail psi like

 

[cafryer]

At idle its 5500 psi

 

[delong_1]

Any codes?

 

[cafryer]

I just logged it and under 100% throttle my rail only gets to 16000 then falls of to 1300 psi.

 

[fctry286]

cp3?? sounds like the same problem pat was having

 

[delong_1]

If you unplug the regs what pressure do they max to

 

[cafryer]

could that be the control box

 

[cafryer]

If you unplug the regs what pressure do they max to

Which one

 

[blackdirtymax]

unplug the second one and see if it changes the motor sound

 

[cafryer]

It does it gets rough and the code it threw was p102

 

[cafryer]

I did notice that the reg on the second pump is a lbz if that makes a differents

 

[The Neens]

cp3?? sounds like the same problem pat was having

The Pat that went 198?

Or another Pat?

 

[Kspen90]

Kinda sounds like the problem the guys were bitching about on the ppe dual fueler thread that turned out to be bad controllers

 

[DIESELMAFIAPER.LB7]

Ya mine had a hiccup at Edge days but hasnt since but you cant mix a lbz an lb7 fpr

 

[cafryer]

I heard you can if its tuned right

 

[cafryer]

Is theirr a way to bypass the second pump and see if the problem goes away can i just put my old belt back on or is their more.

 

[Chevy1925]

It does it gets rough and the code it threw was p102

Is the lbz reg in the pump in the valley or the one off to the side?

 

[cafryer]

the top pump

 

[Chevy1925]

well i think your creating your self issues. If you have a PPE box for a LB7 yet your running a LBZ FPR, i dont see how it will work. specially since we had that whole big thread where Dan stated the control boxes wont work from LB7 to LBZ and so on. Now i could be wrong as ive yet to try this but im jsut going off what was said.

if you swapped the LBZ reg to the valley pump, put the LB7 reg on the second pump on the side and tuned the LBZ reg to work for your truck i can see it all working like it should.