Dead Truck Need Help Please!!
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From: Oshkosh Wisconsin
UPDATE: Well now i'm really upset i tested the old pump just for kicks and it still works... so i unplugged the harness by the fuel tank and hooked power up to different prongs... and that fuel pump works!! So now it's a wireing issue. Why does it have four wires can anyone tell me?
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UPDATE II: i spliced into the ground wire... it runs now... so after all the money and bs that went on it was a stupid ground wire. Does anyone know where the ground wire goes to from the fuel pump harness?
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Joined: May 2007
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From: Solon, Ohio
Originally Posted by ech0sh4y
UPDATE II: i spliced into the ground wire... it runs now... so after all the money and bs that went on it was a stupid ground wire. Does anyone know where the ground wire goes to from the fuel pump harness?
There is a user here named "subford" who would usually post a wiring guide for you.
If you do a search for gas tank/fuel pump related threads, you should trip accross one where he has the wiring diagram posted,............he has done it many times.
Of the 4 wires going to the tank, 2 are grounds.
One is from the fuel gauge and always has 12 volts on it.
The other has 12 volts for the fuel pump when the relay is engaged.
The 2 ground wires are Orange, and Black on my diagram.
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fordsrawesome
1987 - 1996 F150 & Larger F-Series Trucks
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Dec 10, 2011 08:00 AM
