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1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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Fuel gauge problem

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Old Jun 10, 2017 | 08:06 PM
  #16  
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slour
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Originally Posted by meangreen92
Reach up under the dash and find the little release button on the light switch and pull the light switch **** and shaft out, all the way out of the switch. Your lights will be on, so gently push it back in until they turn off, parking lights too, and then pull it back out. Then get a flatblade screwdriver and get behind the wiper ****. There's a little clip, and if you push it toward the **** from the right spot, while pulling the **** out, it will come off.
Then you have the little screws which hold the bezel, mostly visible when you look from underneath. Remove those, and depending on your radio, the whole bezel should come off - lift up a little. The bezel will be tethered by the wires to the light for your Lights and Wiper switches, but the bulb holder simply clips on, and is easy to remove.
Everything in the dash looks pretty straightforward, four screws for the cluster, HVAC, radio, etc...
Check out these sticky threads:
https://www.ford-trucks.com/forums/1...then-some.html
and
https://www.ford-trucks.com/forums/1...mpilation.html

Not quite a Haynes Manual, but in some ways better!
I finally had time to get my dash apart and was able to ground out the fuel gauge and sure enough it shot right to full. Guess its back to checking the sending unit again, maybe I didn't have a good enough ground under the truck.

Thanks for your help so far.
 
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Old Jun 10, 2017 | 08:07 PM
  #17  
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Originally Posted by DB429SCJ
That single wire connector looks like one for a transfer case "lock" indicator light. Only used with NP203 full-time case.
Do you know where on the T case it might connect?
 
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Old Jun 10, 2017 | 08:09 PM
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Originally Posted by NumberDummy
The fuel sending unit float is made of two pieces of brass soldered together. Solder breaks down, gas seeps in, float settles to the bottom of the tank.

Float is available from Ford & repro parts sellers. It's the same: 1957/79 FoMoCo Passenger Cars & Trucks, 1961/79 Econolines and 1966/79 Bronco's.
Do you have the part number for the sending unit? all I can seem to find online is the sending unit for the rear tank.
 
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