Help replacing fuel pump and sending unit 79 Ford Fairmont
I need to replace my fuel pump and my fuel level sending unit in my 1979 Ford Fairmont. The reason is because I am not receiving any signal to my fuel gauge. Neither my chilton's nor my hayne's manual says anything specifically about how to replace those parts. They just say ''drop the tank and replace the parts'' Also after much searching online, I can't even find a replacement fuel sending unit for sale for my car. Any help in either finding the parts or how to replace them would be greatly appreciated.
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Re: Help replacing fuel pump and sending unit 79 Ford...
You should have two metal bands/strapes hold the tank in place, a bolt on each end of the strapes. disconnect the fill neck, supply and return lines, the wires for the pump and sending unit. if possible get the fuel level as low as you can. gas is heavy. lift the car up as far as you can, i say 2 and a half to 3 feet off the ground. a car lift is even better. the fuel pump will be held in place with a ring, use a hammer and punch to drive the ring counterclockwise to remove. don't let any dirt go into the tank.
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When pump was replaced, did you also replace sending unit? It is usually a good idea to replace sending unit when replacing pump. The sending unit also "sends" information about the fuel level to your fuel gage. It is also possible the float on the sending unit is stuck in the low fuel or empty position on the sending unit. Although on some vehicles you can replace individual parts of the fuel delivery system, it is usually a good idea to replace all the internal parts of the sending unit assembly at the same time. After all, most fuel tanks can be a real pain to gain access to the inner workings of the fuel delivery system, so why take the chance of having to gain access again.
The fuel filter is located in the sending unit. This contains three primary components - the fuel pump, the fuel filter, and the fuel level sensor. The sending unit is located inside the fuel tank. This is done because the fuel around it helps cool the fuel pump, therefore extending its life. To remove the unit(You might need a lift), you need to: 1) Drain the fuel tank 2) Detach the fuel tank from the vehicle 3) Lower the tank 4) 'Unlock' the sending unit (it sort of locks in there, but there's no key or anything) 5) Remove the whole unit and replace the problem part. 6) Put the sending unit back. 7) Re-attach the tank. 8) Fill the tank.
to replace the fuel pump module.first you need to relieve the fuel system pressure.turn off radio first, then disconnect the negative battery cable.drain fuel from fuel tank.then then safely raise support car on jack stands. make sure sitting on solid level ground then remove the fuel charcoal canister hoses and vent line remove disconnect fuel pump. disconnect fuel pump electrical connector and remove fuel filler hose from fuel tank then remove the fuel tank from the vechicle.the heat shield and the rear exhaust system may have to be remove if you problem dropping the fuel tank.once fuel tank dropped you need snap ring pliers to remove the fuel pump module retaining ring.disconnect the fuel pump sending unit.disconnect the fuel pressure sensor and fuel pump module electrical connector .if you need help to replace the fuel level sending unit.you need a haynes repair manual.it has instruction how to remove and replace the fuel level sending unit.but most of the time the whole new fuel pump module come with new fuel level sending unit.if you are replacing fuel pump.when done put every thing back visa versa. be very careful working around gasoline and fuel tank.dont smoke.becareful dont make no sparks with wrenches when removing gas tank.wear safety glasses and have a helper at all times. dont work under vechicle by your self.
It's not really easy to tell, you need to test for power and ground at the sending unit at the fuel tank,
while someone is watching the fuel gauge inside the vehicle. 90% of
the time (especially on Ford's) it's a faulty sending unit in the fuel tank, which is usually sold with the fuel pump...if not, I would replace the pump while I had the tank out anyway just as a precautionary measure. . the "float' is the part that of the sending unit that registers
fuel level and sends that
The fuel "level" sending unit is located on the side of the fuel pump module, see red arrow on picture below. The fuel tank will need to be dropped and the fuel pump module removed in order to replace the fuel level sending unit. You can expect to pay a couple hours of labor to remove the tank and replace the level sending unit.
the fuel tank pressure sensor is located on top of the fuel pump module. The fuel tank will still need to be lowered to get at it but the fuel pump module does not need to be removed from the tank to replaced it.
Hi, you can restore the functions of your fuelgauge by replacing the sending unit that i located inside the fuel tank. this unit is part of the fuel pump assembly and, it registers the fuel level, via floating device that is attached to the pump assembly. replacing thissending unit will fix this issue.