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Car Forum / Ford / Ford Trucks / September 2008No power to Fuel Pump
I have a 1986 F150 XLT Lariat 4X4 extended Cab with a EFI 302. The fuel pump has been making noise for a few months, but the other day it just stopped working. It felt like I ran out of gas, but I had plenty. I baught a new pump and installed it, but it didn't work either. I used a multi meter to determine that even with the key on I still had no porwer to the pump. I can get the pump to work with a hot wire, so I know it's not under the truck. Does anyone have a suggestion as to what component could have failed to make this happen. Thanks Dennis Orangevale, CA >I have a 1986 F150 XLT Lariat 4X4 extended Cab with a EFI 302. The >fuel pump has been making noise for a few months, but the other day it [quoted text clipped - 10 lines] >Dennis >Orangevale, CA there is a fuel cut-off switch that could have tripped - safety feature >I have a 1986 F150 XLT Lariat 4X4 extended Cab with a EFI 302. The >fuel pump has been making noise for a few months, but the other day it [quoted text clipped - 10 lines] >Dennis >Orangevale, CA Is there a fuse in the fuse panel for the fuel pump? A friend has a Ford and there is a fuse for the pump. YMMV. Pull it out and the engine stops... > I have a 1986 F150 XLT Lariat 4X4 extended Cab with a EFI 302. The fuel > pump has been making noise for a few months, but the other day it just [quoted text clipped - 10 lines] > Dennis > Orangevale, CA There is a relay that provides power to the fuel pump. There also should be a fuse protecting it as well. > > I have a 1986 F150 XLT Lariat 4X4 extended Cab with a EFI 302. The fuel > > pump has been making noise for a few months, but the other day it just [quoted text clipped - 13 lines] > There is a relay that provides power to the fuel pump. There also should > be a fuse protecting it as well. I checked all the fuses under the dash. Is there another place that this fuel pump fuse sould be. The power that goes to the relay is out as well, so I figured it was between the battery and the relay. >I checked all the fuses under the dash. Is there another place that >this fuel pump fuse sould be. The power that goes to the relay is out >as well, so I figured it was between the battery and the relay. Check under the hood. There should be fuses along with the relays there. Try swapping the relay with another of the same type just to make sure the fuel pump relay is good. SC Tom > >I checked all the fuses under the dash. Is there another place that > >this fuel pump fuse sould be. The power that goes to the relay is out [quoted text clipped - 5 lines] > > SC Tom There might be some "fusable links" between the battery and the fuse box. Personally I've never been able to identify them by looking at them so a manual might be needed. I'd start checking backwards from the relay to the battery until I found out where there is no power. It seems like something else would not be working too though. > > >I checked all the fuses under the dash. Is there another place that > > >this fuel pump fuse sould be. The power that goes to the relay is out [quoted text clipped - 13 lines] > battery until I found out where there is no power. It seems like something > else would not be working too though. Unfortunately the Weekend was to busey, and the truck is at my Dad's house. Wouldn't you know it I broke down just down the street from my dad. I'm he injoyed being able to lend me a hand. >I have a 1986 F150 XLT Lariat 4X4 extended Cab with a EFI 302. The > fuel pump has been making noise for a few months, but the other day it [quoted text clipped - 5 lines] > the truck. Does anyone have a suggestion as to what component could > have failed to make this happen. If you can't get the pump to work with a hot wire, then the new pump has to be toast. I can't read. |
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