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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Fuel pump problems

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Old Oct 2, 2024 | 09:40 AM
  #1  
John r fullilove's Avatar
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Fuel pump problems

Does anyone know what the schematic is for the wiring on the plug on top of the front tank to the sending unit/fuel pump is? And where is the damned fuel pump relay located? I have a 1989 f-350 super crew, and I am already only using the front tank, as the rear tank is in need of serious cleaning. And a new lift pump. I need to run the pump on direct power, as I did with the rail pump. It works fine but I don’t have any other way to keep my truck running. And it’s my work truck right npw
 
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Old Oct 2, 2024 | 10:56 AM
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Next to the EEC relay. On the left fender by the hood hinge.
 
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Old Oct 2, 2024 | 12:58 PM
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From Haynes:

 
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