Why do I have no power to my fuel pump?
If you there is no power to the fuel pump or the relay, then there may be a possible electrical issue with the vehicle. If there is an issue with the switch or the circuit, perhaps a wiring problem, then power to the fuel system may be cut off.
What controls the power to the fuel pump?
The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine. It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump.
Will car crank if ignition switch is bad?
You may get your vehicle to start cranking its engine, but it will usually be pretty slow if the ignition is having trouble. This is often because of corrosion on the electrical circuit directly related to the ignition system that is preventing the proper amount of electricity to flow.
Why does my fuel pump not prime with the key on?
Fuel pump doesn’t prime with key on. I’ve been trying to figure this out for a couple days now. My 01 Tiburon wouldn’t start the other day. It would crank, but wouldn’t fire. When I turn the key to the “on” position, the fuel pump doesn’t kick on.
Is there an ECM signal to the fuel pump relay?
The fuel pump relay works as it should. I always have power to Pin 30. I believe the ECM tells the relay to work via the green/black wire to Pin 85. This should happen for 2 seconds when the key is turned on. I have tested this when the issue is occurring and have confirmed that no signal is being sent from the ECM.
How do I get power to my fuel pump?
1. Remove battery pack from the drill and identify polarity on its connections (using cheap analog voltmeter) 3. attach drill (without battery) to the wires that supply power to the pump. With ignition on and jumper between the Fp and B+ depress the trigger on the drill.
When to connect the B + Terminal to the fuel pump?
The B+ terminal in the diagnostic connector should only have power when the key is in the ‘On’ position. Also, the fuel pump will only receive power (when B+ and Fp are not connected) when the key is in the Start position or the AFM flapper door is open (air is flowing into the engine).