Why did I have to change the fuel pump?
I had to change the pump because it had failed, no pressure or electrical humming. Make sure the fuel injectors are pulsing as oldtimer mentions. Even if the injectors are pulsing it won’t run with only 10 psi fuel pressure. Just curious, do you have a check engine light?
What should I do if my fuel pump is not running?
But if the pump is running thats all that matters at this point. The ECU doesn’t control fuel pressure so it’s not like you tripped some kind of electronic relief valve. I’d focus on the sending unit and fuel lines before anything else.
Can a fuel pump control the fuel pressure?
The ECU doesn’t control fuel pressure so it’s not like you tripped some kind of electronic relief valve. I’d focus on the sending unit and fuel lines before anything else. ’91 3000GT VR4: Build in progress….
What happens when fuel pump loses its seal?
If the pump lost it’s seal at the bulkhead, then it would just dump the fuel back into the tank. Click to expand… Agreed. OP check the rubber o-ring that slides onto the nose of the pump.
What to do if your fuel pump is not working?
If nothing after that, then the fuel pressure regulator is not working and needs replacing. If you get pressure to the rail, then there could be a problem with the injectors; they may be either dirty or plugged up. Take the injectors off the engine and clean them with CLR.
What does no fuel pressure on fuel rail mean?
No fuel pressure on fuel rail after pump and filter change on my 96 grand prix GTP 3.4L I have only $11.90 in my acct. – Answered by a verified Pontiac Mechanic We use cookies to give you the best possible experience on our website.
The ECU doesn’t control fuel pressure so it’s not like you tripped some kind of electronic relief valve. I’d focus on the sending unit and fuel lines before anything else. ’91 3000GT VR4: Build in progress….
What causes a fuel pump to die before filling up?
If you make a habit of running your tank all the way to empty before filling up; your fuel pump will most likely die before its designed lifespan. This is due to the fact that when you shut off the engine with a low fuel level; the fuel can drain from the priming chamber designed into the fuel delivery system.