Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Pulled my '91 bird (3.1 v-6) out to get it ready for summer. The fuel pump stays running after the key is turned off. It's cold outside and I feel like crap so I just parked it and pulled the battery cable off for now.
this is an electric in-tank pump, right?
if so, it's prolly gonna be a stuck fuel pump relay. take a hammer and tap it, plug it back in, and see if it still runs after that. what does the oil have to do with the fuel pump????
Location: Canberra, the REAL capital of Australia!
Car: 1971 GM Holden, HQ GTS Monaro Coupe
Engine: Gen I 350 Chev soon to have TPI
Axle/Gears: Going to be a 3.55
Re: Fuel pump won't shut off....
When you shut your car down, try turning the ignition back on but don't start the car. Does the oil light come on? I ask this because it's a common switch for the driver oil pressure warning lightalso also providing 12Volts for the fuel pump.
The fuel pump is switch to run once the oil pressure sees a certain amount of pressure. It should kill the pump when the motor stops because the oil pressure disappears.
You problem is more than likely, the oil pressure switch or the fuel pump relay.