KFred 513
Proven Member
- 146
- 0
- Oct 11, 2012
-
SUllivan,
New_York
So i'm on a fresh engine, full build top to bottom, idle and cruise tune will work for now until I put the permanent injectors in. My problem is that as soon as I approach boost/put any load on the engine it is starved of fuel.
So far I have:
Swapped in another known working pump (AEM 320LPH)
verified 1:1 rise at the regulator with air compressor
verified fuel filter installed in proper flow direction and not clogged
fabbed a fitting for the sending unit to use fuel line and hose clamps to attach pump
verified 12V at pump with it running,
14+Volts coming from alternator at idle
SD VE adjust keeps wanting to raise the cells in the 3500 rpm column, where the car goes lean. You can see where it is on the VE table. We have tried adding 50% fuel via sliders in that area to see if the car would richen at all, but it doesnt. I don't believe the problem is tune related, I think it is a mechanical issue, but didn't know where else to put my thread. I am just out of ideas, and every other thread is a dead end or my car checks out with their issue. Any help or ideas is appreciated.
Edit: I just went over every tab from the log and noticed DTC p1500. I just broke 100 miles on the new setup, and searches show that it takes 100 miles before people get the code. I rewired the entire charge system with a saturn alternator and removed the wiring to pin 41 at the ecu. If pin 41 on the ecu is not wired correctly, could this cause the ecu to not know how many volts are in the system and result in my problem?
In my log you can see where the problem happens at 136 seconds
So far I have:
Swapped in another known working pump (AEM 320LPH)
verified 1:1 rise at the regulator with air compressor
verified fuel filter installed in proper flow direction and not clogged
fabbed a fitting for the sending unit to use fuel line and hose clamps to attach pump
verified 12V at pump with it running,
14+Volts coming from alternator at idle
SD VE adjust keeps wanting to raise the cells in the 3500 rpm column, where the car goes lean. You can see where it is on the VE table. We have tried adding 50% fuel via sliders in that area to see if the car would richen at all, but it doesnt. I don't believe the problem is tune related, I think it is a mechanical issue, but didn't know where else to put my thread. I am just out of ideas, and every other thread is a dead end or my car checks out with their issue. Any help or ideas is appreciated.
Edit: I just went over every tab from the log and noticed DTC p1500. I just broke 100 miles on the new setup, and searches show that it takes 100 miles before people get the code. I rewired the entire charge system with a saturn alternator and removed the wiring to pin 41 at the ecu. If pin 41 on the ecu is not wired correctly, could this cause the ecu to not know how many volts are in the system and result in my problem?
In my log you can see where the problem happens at 136 seconds
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