1st title bad really need help with this
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Senior User
Joined: Jan 2009
Posts: 426
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From: Southwest Florida Coast
missed deer hunting way too long post
Yesterday when I left work, she started right up but stalled about a block later. had a tough time getting her restarted and only went another b4 she died and would not restart.I noticed about a week ago that the fuel guage was getting weird and researched it here. My selector switch has been grounding out and is evidently dead. when i check it with a meter I get 10-11 volts if I check power, but can't get anything over 1 when I check switch terminals.
Could my selector switch be stuck in no man's land so I'm not getting fuel from either tank? I've checked the schrader valve for pressure and the batteries both read 12+, but when I try to start it the starter clicks really loud. How many issues do you think I have? Is it the switch or something with the starter or both?
Thread Starter
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Senior User
Joined: Jan 2009
Posts: 426
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From: Southwest Florida Coast
1st title bad really need help with this
Yesterday when I left work, she started right up but stalled about a block later. had a tough time getting her restarted and only went another b4 she died and would not restart.I noticed about a week ago that the fuel guage was getting weird and researched it here. My selector switch has been grounding out and is evidently dead. when i check it with a meter I get 10-11 volts if I check power, but can't get anything over 1 when I check switch terminals.
Could my selector switch be stuck in no man's land so I'm not getting fuel from either tank? I've checked the schrader valve for pressure and the batteries both read 12+, but when I try to start it the starter clicks really loud. How many issues do you think I have? Is it the switch or something with the starter or both?
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Lead Driver
Joined: Mar 2006
Posts: 5,109
Likes: 1,538
From: western SD
On my 85 I had a simular problem , and it was the fuel selector valve located on the driver side frame rail. With the starter click, sounds like you toasted the starter trying to restart after it died.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Basically five wires on the tank selector valve.
Three of them are for the fuel gauge, two for switching tanks.
When you switch tanks, the polarity of the power is reversed causing the valve to switch the other way.
I seem to have lost the wiring notes I had.
Three of them are for the fuel gauge, two for switching tanks.
When you switch tanks, the polarity of the power is reversed causing the valve to switch the other way.
I seem to have lost the wiring notes I had.
Fleet Owner
Joined: Jul 2006
Posts: 20,375
Likes: 841
From: Mi'kma'ki
As requested.
<table style="width:194px;"><tr><td align="center" style="height:194px;background:url(http://picasaweb.google.com/s/c/tran...background.gif) no-repeat left"><a href="http://picasaweb.google.com/allerickb/FordDualTankWireDiagram?feat=embedwebsite"><img src="http://lh3.ggpht.com/_KCpQ4xYjSAY/SryOVecGIwE/AAAAAAAAIfc/PwmQgDkk-wo/s160-c/FordDualTankWireDiagram.jpg" width="160" height="160" style="margin:1px 0 0 4px;"></a></td></tr><tr><td style="text-align:center;font-family:arial,sans-serif;font-size:11px"><a href="http://picasaweb.google.com/allerickb/FordDualTankWireDiagram?feat=embedwebsite" style="color:#4D4D4D;font-weight:bold;text-decoration:none;">Ford Dual Tank Wire Diagram</a></td></tr></table>
<table style="width:194px;"><tr><td align="center" style="height:194px;background:url(http://picasaweb.google.com/s/c/tran...background.gif) no-repeat left"><a href="http://picasaweb.google.com/allerickb/FordDualTankWireDiagram?feat=embedwebsite"><img src="http://lh3.ggpht.com/_KCpQ4xYjSAY/SryOVecGIwE/AAAAAAAAIfc/PwmQgDkk-wo/s160-c/FordDualTankWireDiagram.jpg" width="160" height="160" style="margin:1px 0 0 4px;"></a></td></tr><tr><td style="text-align:center;font-family:arial,sans-serif;font-size:11px"><a href="http://picasaweb.google.com/allerickb/FordDualTankWireDiagram?feat=embedwebsite" style="color:#4D4D4D;font-weight:bold;text-decoration:none;">Ford Dual Tank Wire Diagram</a></td></tr></table>
allerickb,
Welcome to FTE and the IDI diesel forum.
So on the stock fuel selector valve connector,
Pin 1 is away from the fuel line end of the valve.
Pin 1 & 2 are the wires from the selector switch that swap hot and ground to run in opposite directions.
Pin 3 goes to the front tank sending unit
Pin 4 goes to the fuel gauge
Pin 5 goes to the rear tank sending unit.
Welcome to FTE and the IDI diesel forum.
So on the stock fuel selector valve connector,
Pin 1 is away from the fuel line end of the valve.
Pin 1 & 2 are the wires from the selector switch that swap hot and ground to run in opposite directions.
Pin 3 goes to the front tank sending unit
Pin 4 goes to the fuel gauge
Pin 5 goes to the rear tank sending unit.
from:
https://www.ford-trucks.com/forums/8...ve-wiring.html
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Senior User
Joined: Jan 2009
Posts: 426
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From: Southwest Florida Coast
thanks
Thanks for the guidance, turned out I had a laundry list, selector switch, bad alternator(which had no ground wire), voltage regulator and a short in the ignition. took all day to track it all down, runs better than ever, but it has a weird click now when it's in gear and going down the road.
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