Therefore the purging process stops to allow the gas tank to be pressurized only a few psi of pressure and the sound went away. Look for signs of moisture burn marks or leaking capacitors.
1978 Toyota Pickup 20r Won T Stay Running Detailed
Fuel pump stays running. Sounds like the fuel pump relay in under hood fuse box try finding another next to it thats the same from the headlamp relay and swap them and see if it helps. It sounds like you have a short to voltage somewhere. I swapped the ac compressor relay with the fuel pump relay in the fuse block but that did nothing. Remove the connector the retainer screws then pull it out and open it. Now the transmission does not shift properly and the fuel pump seems to keep running. Suspect the fuel pump relay.
Fuel pump fuse ecm 11 20 amp is blownis the fuel pump linked t. If the pump runs with the relay removed its not the relay. Normally the fuel pump relay operates during starting and when turning off the engine. When you turn the ignition on even without starting the engine that activates the fuel pump and also pressurized the tank. No its not the fuel pump thats running but the purging system. I tried pulling the fuel pump fuse and it still kept running.
When i turn the truck off the fuel pump continues to run. If it is stuck the pump could continue to run. Combined with the other issues you stated its most likely the pcm. Hello i have a 2008 sierra sle with a 53 engine. I suggest you check the net for info on how a fuel pump relay works and conduct the electrical test. The only way i can get it.
Anytime the fuel pump stays running with the key on its either a stuck fuel pump relay or most likely a bad engine computer pcm. A full explanation of how the relay works and how to check it is quite long. Help i need help understanding how fuel pump relay stays energized on 2002 chevy expressi have lost secondary spark no spark at plugs. A fuel pump should pump all the time when the engine is running there maybe if its fuel injected a pressure regulator to ensure sufficient pressure is there otherwise it is.
Gallery of Fuel Pump Stays Running
