fuel pump fuse blows intermittently
08-09-2016, 06:16 PM
#1
fuel pump fuse blows intermittently I have fuel pump fuse issues I hope someone can help me with....
2007 Corvette LS2 ,BP harness, Aeromotive stealth in tank pump the pump itsself is a Walbro I think its a GSS242, when I was running with the re-worked stock harness I ran the gray fuel pump wire to a relay in the trunk of the car, This worked fine for 3 years, but I melted some wires in the harness so I went with a BP standalone(beautiful work Bill by the way), any way, when I run his gray wire to my relay it intermittently blows the fuel pump fuse and its always after the 2 second fuel rail prime, if I connect the wire from my trunk relay to my fuse panel key on/start it works fine but in this case the pump runs continuously not a good thing. I actually have 2 questions is it ok to use a solid state relay (the one that came with the harness from BP) to trigger a conventional electro/mechanical relay, and does anyone know if the ECU removes power from the pump gray wire after the 2 second prime then reapply it after the engine starts? reason I ask is I put a volt meter on the BP gray pump wire and turned the key on it did not drop power after the 2 second prime. Well I found out one thing with nothing on the end of the fuel pump wire it throws a P0230 code, wonder how the heck the computer knows theres nothing connected? to be continued......
2007 Corvette LS2 ,BP harness, Aeromotive stealth in tank pump the pump itsself is a Walbro I think its a GSS242, when I was running with the re-worked stock harness I ran the gray fuel pump wire to a relay in the trunk of the car, This worked fine for 3 years, but I melted some wires in the harness so I went with a BP standalone(beautiful work Bill by the way), any way, when I run his gray wire to my relay it intermittently blows the fuel pump fuse and its always after the 2 second fuel rail prime, if I connect the wire from my trunk relay to my fuse panel key on/start it works fine but in this case the pump runs continuously not a good thing. I actually have 2 questions is it ok to use a solid state relay (the one that came with the harness from BP) to trigger a conventional electro/mechanical relay, and does anyone know if the ECU removes power from the pump gray wire after the 2 second prime then reapply it after the engine starts? reason I ask is I put a volt meter on the BP gray pump wire and turned the key on it did not drop power after the 2 second prime. Well I found out one thing with nothing on the end of the fuel pump wire it throws a P0230 code, wonder how the heck the computer knows theres nothing connected? to be continued......
Last edited by 79LS1FOX; 08-09-2016 at 06:40 PM. Reason: add text
08-10-2016, 07:15 AM
#2
Restricted User
The computer provides power for just a couple of seconds to the fuel pump relay, and then constantly while running or cranking.
It knows its not connected to a relay, that's why it throws the code. There is no current draw.
It knows its not connected to a relay, that's why it throws the code. There is no current draw.