When do I turn ignition on fuel pump keeps running?
I don’t think anywhere in the thread he has said that the engine is turning over, only the hum of a motor running, which is most likely the fuel pump. However, he still should be able to get the engine to turn over with the starter, unless the battery voltage is low and the voltage circuit in the starter relay is keeping it from activating.
Why does my fuel pump not prime when I turn it on?
Pulled fuel pump relay and put in a jumper wire to run the fuel pump and it started. Put the fuel pump relay back in and it starts and drives, but the fuel pump still doesn’t prime when turning the key on. I’m afraid that after sitting overnight, it will once again refuse to start.
What to do if you can’t hear your fuel pump?
If you can’t hear the pump working, enlist the help of an assistant and follow the next steps: Remove the fuel filler cap. Put your ear close to the fuel filler opening. Ask an assistant to turn the ignition key to the ON position, but don’t start the engine. You should hear a whirring sound coming from inside the fuel tank for about two seconds.
How can I tell if my car has a fuel pump?
Remove the fuel filler cap. Put your ear close to the fuel filler opening. Ask an assistant to turn the ignition key to the ON position, but don’t start the engine. You should hear a whirring sound coming from inside the fuel tank for about two seconds. That’s the sound of the fuel pump being energized.
I don’t think anywhere in the thread he has said that the engine is turning over, only the hum of a motor running, which is most likely the fuel pump. However, he still should be able to get the engine to turn over with the starter, unless the battery voltage is low and the voltage circuit in the starter relay is keeping it from activating.
Pulled fuel pump relay and put in a jumper wire to run the fuel pump and it started. Put the fuel pump relay back in and it starts and drives, but the fuel pump still doesn’t prime when turning the key on. I’m afraid that after sitting overnight, it will once again refuse to start.
If you can’t hear the pump working, enlist the help of an assistant and follow the next steps: Remove the fuel filler cap. Put your ear close to the fuel filler opening. Ask an assistant to turn the ignition key to the ON position, but don’t start the engine. You should hear a whirring sound coming from inside the fuel tank for about two seconds.
Remove the fuel filler cap. Put your ear close to the fuel filler opening. Ask an assistant to turn the ignition key to the ON position, but don’t start the engine. You should hear a whirring sound coming from inside the fuel tank for about two seconds. That’s the sound of the fuel pump being energized.
Why does my Harley Davidson have no fuel pump?
If battery static volts measure 11.6v or less with the ignition on the ECM won’t energize the system. am not getting any voltage at the 15 amp fuse at key on, also have battery charger on while testing. engine cranks at good speed. are there more powers and grounds at the battery then just the main positive and negative battery cables?
How can I get my fuel pump to run?
Swap an accessory fuse wuth the ignition fuse and give it a whirl. also if I use a “power probe” and apply battery voltage to the fuel pump fuse the fuel pump does run. thanks nipplesurfer, I did try that yesterday.
What does it take to start a Harley Davidson Sportster?
This article applies to the Harley Davidson Sportster. What does it take to start a Sportster? When you turn the ignition switch to the on position, current is sent to the start button. Pressing the button sends power to the starter solenoid, which sends a large amount of current from the battery to the starter to turn the motor.
What should the Run switch read on a Harley Davidson Sportster?
Remove the kill switch from the right handlebar grip. Measure the resistance/continuity of the switch with the switch unpressed using the same method described for testing the run switch. The reading should be 0.1 ohms or less. Press the switch and measure again. The reading should now be “OL” or infinite, meaning no connection is present.
Why is my fuel pump not working on my motorcycle?
Fuel injection systems are tricky to deal with, which makes it challenging to determine whether your bike is having injector issues or another problem. But since fuel injectors very rarely fail, experts suggest a pump failure is more likely.
Is the fuel pump suppose to get power with the ” on ” key?
I have a Haynes manual for my 90 TSi Awd that specifically states that the fuel pump should come on with the key in the “on” position, engine off, and that it will shut off after two seconds if no ignition signal is detected. Mine’s even done that once or twice, too. So yes, technically, it should, though it may not be doing so.
What should fuel pressure be when no Buzz?
Fuel pressure is typically in the 35 to 45 psi range. If your Anti-Theft light is flashing; the anti-theft system is disabling the fuel pump to prevent the engine from starting. Bad fuel pump (Pump should run for a few seconds when ignition key is turned to start, no buzz means no fuel delivery to the engine).
How does a fuel pump relay work in a car?
It is usually controlled by the ignition or the power control module. When you turn on the ignition, the fuel pump relay is activated and will supply electricity to turn on the fuel pump.
Is the fuel pump suppose to get power?
The pump is working, and the wires are intact all the way to the pump itself (I took it out and checked), but I can’t figure out why the darn thing’s not kicking on until I turn the engine over. Hopefully I can find an answer in the forums. On a 1G the fuel pump doesn’t get power until the ignition switch is in the START position.
What are the symptoms of a faulty fuel pump relay?
1 Engine does not start. A common symptom of a faulty fuel pump relay is an engine that just refuses to start, even though the engine may still crank when the 2 Engine stalls. One of the most common symptoms of a failing fuel pump relay is an engine that suddenly stalls. 3 Loss of Power. 4 No noise from the fuel pump.
Why does the fuel pump make a noise when the engine is off?
This noise is commonly drowned out by the running engine, but can usually be heard very briefly when the key is first turned to the “IGN” position with the engine off; for that brief period, the pump is priming the downstream fuel delivery system.
When does an electric fuel pump go bad?
Electric fuel pumps, however, can begin to go bad without entirely failing. In this situation, aside from a decrease in engine performance, the problem is most often evidenced by noisy operation.
When does the fuel pump relay shut off?
Once the engine is running, the fuel pump relay shuts off. At this point, the electricity for the fuel pump is supplied by the oil pressure sending unit. When you shut off the ignition, the fuel pump relay is engaged again, long enough to power down and shut off the fuel pump.
What are the signs of a failing ignition switch?
Common Signs of a Failing Ignition Switch Engine Will Not Start. The problem here is probably: An anti-theft fault; Fault in the fuel pump circuit; Ignition circuit; Engine computer; If the anti-theft light is flashing, the computer is NOT recognizing the key or key fob and is; preventing the engine from starting.
Can a bad ignition switch cause a car to not start?
Another obvious sign that your ignition switch has gone bad is that your car won’t start at all. Do note that this can be indicative of other problems like the starter, the battery, fuel pump, vacuum lines, among others. Regardless, it’s good practice to include the ignition switch as one possible cause of your car not starting.
How does the ignition switch work on a car?
The ignition switch has several positions that power on different systems as the key is turned. Most ignition switches will activate the electrical accessories in the first position, power on the fuel and ignition systems on the second position, and crank the engine on the third.
How can you tell if your ignition switch is bad?
Also, it will completely destroy the keyhole. Another obvious sign that your ignition switch has gone bad is that your car won’t start at all. Do note that this can be indicative of other problems like the starter, the battery, fuel pump, vacuum lines, among others.
It is usually controlled by the ignition or the power control module. When you turn on the ignition, the fuel pump relay is activated and will supply electricity to turn on the fuel pump.
How long does it take for fuel pump to shut off?
Not to mention it just adds more wear and tear to the starter motor and engine. This usually lasts around two or three seconds, unless the ignition key is turned to crank the position.
Where does the fuel pump get its energy from?
The fuel pumps of most vehicles receive their energy via a relay by the powertrain control module (PCM). When you turn on the ignition, the PCM gives energy to the fuel pump relay for a few seconds, so that the pump can run to build pressure.
Why is the fuel pump and relay not working?
The ignition circuit, which includes the ignition switch, controls power to many components, including the fuel pump and relay. 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.
Is there no power to the fuel pump?
No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.