Fuel problems 92 460
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5th Wheeling
Joined: Sep 2024
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My mistake. Both tanks share the same fuse and relay so I’m not sure what replacing those parts was supposed to do. I incorrectly assumed that both were getting power but the truck will not start on either tank which is why I thought to see how much pressure you were getting. What year truck donated the tank and pump assembly?
Hotshot
Joined: Jun 2015
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Ford would change the wiring every couple of years. Are the pumps wired the same? Do you have power at the pump?
Hotshot
Joined: Jun 2015
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5th Wheeling
Joined: Sep 2024
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Jumper Pins 2 and 6 on the diagnostic link under the hood, then turn the key to the Run position. The fuel pump relay is supposed to energize and stay on with the jumper in. This is a basic test to verify the fuel pump voltage supply circuit is good. It removes the computer from the equation. Now is a good time to invest in a DVM and simple incandescent test lamp.
Pins 2 & 6:
courtesy of Subford
Pins 2 & 6:
courtesy of Subford
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5th Wheeling
Joined: Sep 2024
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I have power at the pump now
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Logistics Pro
Joined: Nov 2013
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From: Mojave, Ca
No. A 1986 pump will not work in a 1992 truck. The 1986 pump only makes 15psi. 1992 trucks need 30-45 psi. It may start and idle poorly, but itll stall if you press the gas pedal.
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5th Wheeling
Joined: Sep 2024
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ok I have a wire off the passenger side fuel rail that’s stopping it from running where does it go?
Hotshot
Joined: Jul 2020
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From: Near Salt Lake City
Right, your engine needs 30 pounds of fuel pressure to run
They will actually run at around 22 lbs, but the spec is 30-35
You can just buy one of the 44 dollar Delphi pumps online and install that in your sender
You get the primary side solved? and have power to the pump now?
They will actually run at around 22 lbs, but the spec is 30-35
You can just buy one of the 44 dollar Delphi pumps online and install that in your sender
You get the primary side solved? and have power to the pump now?
Hotshot
Joined: Jun 2015
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Show us a picture of said wire. You said the rear pump didn’t work so how did the front pump continue to work without this wire?
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5th Wheeling
Joined: Sep 2024
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Once I did this connected the 2 pins together the pump turned on
That’s the wire it comes off of the fuel rail it was off when I got the truck
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