Fuel Selector WIring
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Junior User
Joined: Jan 2008
Posts: 51
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From: Houston, TX
Fuel Selector WIring
Hi all. NEw to me 1987 F250 carbureted, 460 V8. GOt a bunch of stuff sorted out already, but noticed a wiring mess at the bulkhead connector through the firewall. I traced the wiring out to the fuel tanks/selector valves.
The previous owner has spliced all kinds of wire together, removed fuel lines from the selector valve and installed an inline fuel filter. I'm looking for a wiring and fuel line diagram. I've searched the forum and I find diagrams for a bunch of different years and models, but not for this model. I'd like to wire it all back to factory original and then figure out what led the PO to rig it up this way.
Thanks in advance!
The previous owner has spliced all kinds of wire together, removed fuel lines from the selector valve and installed an inline fuel filter. I'm looking for a wiring and fuel line diagram. I've searched the forum and I find diagrams for a bunch of different years and models, but not for this model. I'd like to wire it all back to factory original and then figure out what led the PO to rig it up this way.
Thanks in advance!
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
Search the '80-'86 forum for "hot fuel handling"
Carbs were only available on 460's until mid 1987, but the same system was used in previous years.
The hot fuel handling system circulates fuel constantly to reduce or eliminate vapor lock that can effect a mechanical fuel pump like mine.
Carbs were only available on 460's until mid 1987, but the same system was used in previous years.
The hot fuel handling system circulates fuel constantly to reduce or eliminate vapor lock that can effect a mechanical fuel pump like mine.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
This post from subford should help.
Ford Truck Enthusiasts Forums - View Single Post - no Fuel Pressure - '87 F250 - 460cid - carb (non EFI)
Edit; I see he beat me to it. Reps sent. Thanks Bill!
Ford Truck Enthusiasts Forums - View Single Post - no Fuel Pressure - '87 F250 - 460cid - carb (non EFI)
Edit; I see he beat me to it. Reps sent. Thanks Bill!
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
Edit:
What I meant by that -in this context- was that enikolich should search in the 80-86 subforum because the information on *carburetor* fuel pump wiring would be there.....
What I'm trying to say Dan, is that in mid 1987 460's in pickups became fuel injected (although 460 drivelines in chassis cabs and motorhomes w/ a GVW over 10,000 lbs continued to use carburetors.)
Is your 351 pickup over 8,500 GVW and non-catalyst?
What I meant by that -in this context- was that enikolich should search in the 80-86 subforum because the information on *carburetor* fuel pump wiring would be there.....
What I'm trying to say Dan, is that in mid 1987 460's in pickups became fuel injected (although 460 drivelines in chassis cabs and motorhomes w/ a GVW over 10,000 lbs continued to use carburetors.)
Is your 351 pickup over 8,500 GVW and non-catalyst?
Last edited by ArdWrknTrk; May 29, 2010 at 03:43 PM. Reason: Re-read Dan's question.
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Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Is your 351 pickup over 8,500 GVW and non-catalyst?
Yes
I'll have to check my book, not sure if it's covered or not I never looked. One thing I never had a problem with, its tank switching setup.
Yes
I'll have to check my book, not sure if it's covered or not I never looked. One thing I never had a problem with, its tank switching setup.
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Thread Starter
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Junior User
Joined: Jan 2008
Posts: 51
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From: Houston, TX
Fuel Selector WIring
Closing this thread. The wiring diagrams posted in this thread helped me solve the problem. The 6 port selecter valve is bad and I will replace tomorrow.
The other problem I had was the feed to the fuel pump relay. On the starter solenoid, there is an "I" terminal. This provides power to the fuel pump relay during engine cranking. That wire was shorted somewhere between the solenoid and the relay. I ran a new wire and fuse link and problem solved.
I am now on my way to starting a new thread related but different. Thangs again!!!
The other problem I had was the feed to the fuel pump relay. On the starter solenoid, there is an "I" terminal. This provides power to the fuel pump relay during engine cranking. That wire was shorted somewhere between the solenoid and the relay. I ran a new wire and fuse link and problem solved.
I am now on my way to starting a new thread related but different. Thangs again!!!
Thread Starter
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Junior User
Joined: Jan 2008
Posts: 51
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From: Houston, TX
Fuel Selector WIring
I lied. One last thing. I paid a one year subscription to alldata.com to get the remaining diagrams and info i needed. I just as easily could have ordered a factory service manual and waited for delivery, but this was an instant source of information. I was reluctant to pay for it, but after buying a Chiltons and a Haynes manual at the local parts places, the alldata subscription was waaaaay mmore valuable and detailed.
Ok, thats it!
Ok, thats it!
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