Question about Ford F-250

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I need the fuel pump fuse location on a 2000 F-250 with the 5.4 V8. I just built the engine and want to prime the oil pump b4 I start it but the owners manual is missing Also the Ignition fuse thanks.

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Just disconnect your coil so it won't start. Crank it until you see pressure reading on the gauge. Also dod you fill the oil filter with oil?

Posted on Dec 25, 2008

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Pump is not priming/running - as it did b4 I spent $286 to fix it. Car was built 8/1995. Only see one sensor & it has only one wire going to it - not 3. Oil press gauge is normal pressure. Any clues?


Did you do any testing, before you spent the money? Did you check voltage and ground for the fuel pump motor? How long since a tune-up? I see the year, make and model didn't post for some reason? That info would be helpful.
I only have access to a US automotive database. If your vehicle is only sold in another country, I doubt I can help, because I can't look up any info.

May 30, 2016 | Cars & Trucks

2 Answers

How do i prime the engine after rebuilding 3.1


What kind of engine is it? As far as the pistons go you should have used motor oil or the like on the rings when you installed them. If you're talking fuel and it's a fuel injected engine, you shouldn't have to prime it as the fuel pump pressurizes the system and shouldn't need any other source.

Dec 25, 2014 | Cars & Trucks

1 Answer

Wont start unless manually primed


Turn the ignition key to the ON position without starting the engine

You should hear the fuel pump priming for about a few seconds then shutting itself off.
If not hear replace the engine oil pressure switch
The 3rd wire to that switch is the pumps prime switch lead.
When the engines oil pressure is reached the computer will shut that circuit off and turn on the fuel pump relay
If you hear the pump prime the relay maybe at fault instead

Jan 19, 2011 | Chevrolet 1500 Cars & Trucks

5 Answers

2002 GMC Sonoma 2.2l 4cyl. I have been having intermittent fuel pump problems. I replaced the fuel pump and now the truck will not start. There is spark and there is flow at the filter, but it is very...


With the ignition key turned on without trying to start the engine you should hear the fuel pump run for a few seconds. That is how its primed to start. Upon starting the oil pressure reaches normal operations & the prime switch will cut off by the signal from the computer. Thus the engine still needs fuel to run so the computer switches on the fuel pump relay to provide the fuel to the engine. The prime switch is intergrated with the oil pressure switch. If you do not hear the fuel pump upon having the key on replace the oil pressure sensor

Dec 28, 2010 | GMC Sonoma Cars & Trucks

2 Answers

Wont start, checked the fuse, cant seem to locate fuel filter.


Turn the key to the ON position without starting the car
You should hear the fuel pump running for 5 seconds to prime the fuel up to the engine so it can start. If no sound is coming from the fuel tank area which can be heard with the drivers door opened in a quite area the oil sending unit on the engine needs to be looked at. If its bad the fuel pump will not prime. If the oil sending unit is good the fuel pump is at fault instead
Oil pressure to your engine achieves to close the circuit to this switch which the computer senses. When the oil pressure is up to normal standards the PCM shuts that circuit off and turns on the fuel pump relay

Jun 22, 2010 | 2004 Chevrolet Malibu

3 Answers

I have no power to the fuel pump on my 1996 TBird. Where is the fuse for the fuel pump located.


Do this test first. With the drivers door opened in a nice quite area turn the ignition key to the ON position without starting the engine. You should hear the fuel pump operating for 5 seconds which is priming fuel to the engine. If not heard the engines oil pressure sensor is at fault. The third wire from this sensor links to the fuel pump to prime. When the engine reaches normal operation oil pressure range the computer shuts off that circuit and turns on the fuel pump relay for the pump to run. That relay stays on until you shut the engine off

Jun 19, 2010 | 1996 Ford Thunderbird LX

1 Answer

1997 Suburban, cranks, won't start. Removed fuel pump and it runs when attached to battery on bench. Power at all fuses, no power on grey wire at 4 prong connector above rear axle. Is there a fuel pump cut...


The oil pressure gauge on the engine runs the fuel pump until the engine receives full oil PSI and shuts off. Upon that time the relay takes over for the fuel pump

Jan 25, 2010 | 1997 Chevrolet Suburban

2 Answers

1998 gmc 2500 sle 5.7 wont stay running


Theres only one fuel pump relay, unless you have dual tanks. Be sure you have 55-60 psi fuel pressure. I "think" the oil pressure switch supplies power to the fuel pump after the engine is running.

Dec 14, 2009 | 1998 GMC Sierra

3 Answers

How do you check if your fuel pump is bad without removing the gas tank


Put the key into the ignition and turn it to the second position. This position will light up the dash lights but will not crank the engine.
Listen for a faint or soft humming sound coming from the rear of the vehicle, specifically the gas tank. This will happen almost immediately after you turn the key to the second position, so you'll have to listen closely and be ready for it. The humming is the sound of the fuel pump priming, or pressurizing, the fuel system. If you do not hear this sound, you may have a faulty fuel pump.
  1. Check to make sure there is enough fuel in the gas tank. Although this may seem obvious, it happens to the best of us. If you're gas tank is near empty, the engine may not start. This happens more frequently in the winter time in cold climates; the low temperatures cause condensation to form on the inside of the gas tank. Since water doesn't burn, the fuel pump tries to draw in fuel and instead gets a mixture of water and gasoline and cannot get enough fuel to the engine for combustion.
    Check to see that the vehicle starts. Even if you don't hear the fuel pump priming, attempt to start the vehicle. If the engine won't turn over (start) and you haven't heard the fuel pump prime the system, it is a good indication that the fuel pump may have failed.

    Check the fuel pump fuse. If the fuse is blown, the fuel pump will not prime. Open the fuse box under the dash of your vehicle and locate the fuse for the fuel pump. Alternately, some vehicles locate the fuel pump fuse in a fuse box under the hood. Remove the fuse box cover (specific removal will vary according to the vehicle). Check the fuse to see if the metal strip inside the fuse has popped. Replace the fuse if the metal strip has popped; if it hasn't popped, it is most likely your fuel pump itself that has failed.

Nov 03, 2009 | 1992 Honda Accord

1 Answer

1996 tahoe wont start


There should be a 2 second prime by the fuel pump. This prime by the fuel pump is standard for GM vehicles, and if it is not present a hard start is encountered. Turn the ignition to the run position and listen for the fuel pump operation. You may have to have an assistant listen at the fuel filler by installing a long slender funnel into the fuel inlet to the tank, remove the gas cap and insert the funnel, listen at the large end of the funnel to see if the pump can be heard running. Using the funnel acts like a megaphone and makes it easier to hear the pump. If the pump runs for 2 seconds after you turn the key to the run position (DO NOT attempt to start the engine during this test) and the engine doesn't start due to lack of fuel, check for an obstructed fuel filter. (Just change it, it's probably overdue for service anyway since everyone thinks it get changed during oil changes, but never really does.) If the pump doesn't run during prime interval, the computer may not be turning on the fuel pump relay, or the relay is defective. To check the relay, use another of the relays in the power distribution box to substitute for the suspect fuel pump relay and retest. Be sure to wait at least 30 seconds between key cycles since some systems have a delay timer built in to keep the pump from over running. Be sure the relay you sub into the fuel pump socket is identical to the one you remove and properly oriented in the socket. The engine will run following your manual prime because an additional set of contacts in the oil pressure switch will power up the fuel pump relay once proper oil pressure is achieved by an idling engine. If you find that the relay is not defective, but doesn't provide a priming impulse, the engine computer may have failed. DO NOT use a conventional test light with a filament type bulb to check any of the computer circuits that drive the fuel pump relay, or any other computer controlled circuits on an automobile ( or pickup) The driver circuits in a vehicle computer can be blow-out by over-current when using a conventional test light. You can use a high-impedance DVOM for testing safely.

Nov 01, 2008 | Chevrolet Tahoe Cars & Trucks

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