First i am in Beirut/Lebanon i have GT 2005 with 117k on it that was shipped from the US. I have a major problem on acceleration and on WOT with the fuel delivery as shown in the video here:
I shipped a new FP and installed it but the problem remains the exact same one.
I sat in the back of the car with a friend driving it and tested the voltage coming to the pump on load, it reached maximum 9V (thats a problem) .
I did some pids logs :
Fuel rail pressure on WOT: fluctuating severely between 0 and 60psi
Fuel pump voltage: between 5-9V maximum (problem)
VOM tests with key on:
TPS showed 5v
FRPS showed 5v
FPDM 12v (i read that it should be 10.5v)
Fuel Pump showed 4v
Battery 13v
ALT 14v (on idle)
Ground test:
12v (no leaks)
Vacuum test:
no leaks
Inertia switch test passed (i connected the 2 wires and car runs)
MAF cleaned also.
I logged battery voltage pid and it goes down to 10-11V on load, something is sucking power (here is the problem)
Does the PCM gives voltage directly to the pump or it has to pass by the FPDM first? How does electricity goes to the pump so i can check more things.
How can i check the PCM fuel pump wire that goes to the pump and FPDM?
Any ideas what else should i check please?
Thank you.
I shipped a new FP and installed it but the problem remains the exact same one.
I sat in the back of the car with a friend driving it and tested the voltage coming to the pump on load, it reached maximum 9V (thats a problem) .
I did some pids logs :
Fuel rail pressure on WOT: fluctuating severely between 0 and 60psi
Fuel pump voltage: between 5-9V maximum (problem)
VOM tests with key on:
TPS showed 5v
FRPS showed 5v
FPDM 12v (i read that it should be 10.5v)
Fuel Pump showed 4v
Battery 13v
ALT 14v (on idle)
Ground test:
12v (no leaks)
Vacuum test:
no leaks
Inertia switch test passed (i connected the 2 wires and car runs)
MAF cleaned also.
I logged battery voltage pid and it goes down to 10-11V on load, something is sucking power (here is the problem)
Does the PCM gives voltage directly to the pump or it has to pass by the FPDM first? How does electricity goes to the pump so i can check more things.
How can i check the PCM fuel pump wire that goes to the pump and FPDM?
Any ideas what else should i check please?
Thank you.