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If your fuel pump is not receiving power it could be because a fusible link or fuse has blown, the fuel pump relay is not switching or the brain (ecu) is not triggering the fuel pump relay. To test it, pull the fuel pump relay and locate the coil prong and switch prongs on the relay. There is usually a diagram on the relay or the prongs are numbered. Prongs 85 and 86 are for the coil and prongs 30 and 87 are for the switch. Figure out ( carefully ) wich leads on the relay mount correspond with the prongs on the relay. Use a jumper between the switch leads ( 30 and 87 ) and have a friend stand by the fuel tank. Turn the ignition key to the on position and your friend should hear the fuel pump start to run. Don't run the pump for more than a few seconds. If it does not come on you have probably blown a fusible link or fuse. Remember to remove the jumper. If it does come on test the signal from your brain by using a volt meter or test light between the coil leads ( 85 and 86 ) on the relay mount. Have your friend turn the ignition key to the on position and the light should light up ( or the volt meter should show voltage ) for a few seconds then shut off. If this does not happen there is no signal from your ecu. If it does happen replace the relay.
Electric fuel pump is mounted to the fuel tank, it spins when you turn the key on when it reaches its needed fuel pump presseure it turns off, goes back on when the pressure drops....get it?? You cvan gear it spinning when you first get into the vehicle, turn everything off close the doors and turn on the key withiout starting the engine it makes noise from the rear of the vehicle.
Electric fuel pumps are only engaged for a few seconds when the key is first turned on. If the engine doesn't start, the pump is turned off.
If THAT's not what you're seeing, check the fuse and the relay.
A couple of quick checks: the fuse for the fuel pump, or a fuel pump cutoff switch. These are the two common methods of relieving fuel pressure before replacing these parts. Also check the fuel pump relay in the fuse block. They are usually identical to at least one other relay in the block (they may all look the same, check the part numbers stamped on them. If the fuse and cutoff are fine, switch the relay out with an identical one from the block and retest.
Also; when you pulled the old pump out, the tank should have been empty or very close, did you remember to put fuel back in the tank?
One other thing; the replacement pump may be defective (it has happened to me twice).
The fuel pump circuit and the fuel gauge circuit are not linked. Look for: blown fuse, broken wire, bad pump.
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What could be wrong if you changed the fuel pump of an 86 Cherokee 4x4 and now it is not getting fuel to the injectors?
You may have a bad fuel pump relay or a blown fuel pump fuse.
Will the fuel pump relay stop truck from starting?
Yes, along with many other causes a bad fuel pump relay can cause a no start. The fuel pump relay provides power to the fuel pump.
What can you do if the fuel pump on your 1999 Tahoe has no power?
Check the fuse and the relay. If it's the fuse, and the next fuse blows out immediately, be suspicious of the fuel pump.
Tell why the engine is not getting gas for a 95 Nissan pickup?
fuel filter clogged fuel pump weak fuel line clogged
Truck will not start after changing lift pump on a 1999 Ram 2500 Cummins Truck will not start after several hours trying to bleed injector pump and only getting fuel out of 2 injectors?
If you are only getting fuel out of two lines, then the injection pump is probably bad.
Why is the fuel pump on your 1999 Toyota Corolla not getting power?
fuel pump relay, fuse or wires
What would stop power getting to the fuel pump on 94 Saturn sl2?
Blown fuel pump fuse or defective fuel pump relay.
Power to fuel pump but not pumping fuel?
If you're getting power to the pump this proves the fuel pump fuse and fuel pump relay are good. That leaves only two possibilities. Either the pump is running but it's not pumping fuel. Or possibly the fuel filter is clogged.
What causes no fuel to come out of the fuel pump when power is getting to it which causes a 1991 Chevy Camaro not to start?
If the pump is getting power but not pumping, it's probably a faulty pump. It's also possible that the pump pickup screen is blocked.
What is wrong with a '91 Jeep Cherokee if no gas is getting to the fuel regulator?
Blocked fuel line or SOCK (pickup) inside fuel tank-fuse 2 fuel pump OR anti-rollover switch that has been bumped or in a wreck.OR the hose that connectes the fuel pump 2 the pick-up tube inside the tak.or a bad fuel pump. 1st check to see it the fuel pump is getting power. If not check if power is getting to the fuel pump relay.
1997 Dodge Neon and the fuel pump is not working you replaced it and it still does not pump fuel?
Check to make sure that the pump is getting power to the Neon fuel pump. Check the pump relay, and the pump fuses.
Not getting power to electric fuel pump on 9-20?
CHECK THE CONNECTOR THAT IS ABOVE THE TRANSMISSION. MY POWER WIRE TO THE FUEL PUMP WAS LOOSE IN THE CONNECTOR AND CAUSED THE VAN TO SHUT OFF. I FOUND THIS AFTER I REPLACED THE FUEL PUMP.
You have a 97 Pontiac grand prix 3800 is not getting fuel or power to the pump replaced pump checked relay fuses Should you see power at the pump with a test light?
if after replacing fuel pump and still not getting power to the pump, check the crank sensor, this may have gone bad and quite often can be the problem.
What shorted if the fuel pump isn't turning on and the fuel pump relay isn't getting any power and there are some bare wires?
The fuel relay controls the fuel pump, so where are the bare wires? If the relay isn't getting any power then the fuel pump will never turn on, unless you want to bypass it to check the pump. If the bare wires are going to your fuel pump relay you have your problem... if not, either way, bare wires are a problem.
Why would a 1996 Ford Contour not be getting power to the fuel pump?
Check all fuses and fuel pump relay. Check the fuel pump inertia cutoff switch in the trunk.
You are not getting power to your fuel pump and relays are good what do you check now?
Fuses.
Why are you not getting any fuel to the fuel rail on your 1990 740 gl?
No power to the fuel pump. Bad fuel pump. Fuel pump pickup screen extremely clogged. Fuel filter extremely clogged. pinched fuel line no fuel in tank
