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Dec 22, 2003 | 08:59 PM

earl_change

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Joined: Nov 2003

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hey yall,
I have a 85 f150 with dual tanks and ever since i have owned the truck the fuel gauge slowly drops to empty when there is still about half a tank of gas. This happens on both tanks. does anybody know if there is a simple solution to this problem. i have replaced the fuel gauge with one from the local junk yard and it behaved the same way. any suggestions would be welcomed.
thanks.
earl.

Dec 22, 2003 | 09:20 PM

christaylor

Fleet Mechanic

Joined: Oct 2003

Posts: 1,619

Likes: 12

From: Forest Hill MD

Mine does the sameting unless the other tank is empty then i run out of gas before I get to the station.lol I hate that!!!

Dec 23, 2003 | 03:21 PM

bigric

Fleet Mechanic

Joined: Aug 2001

Posts: 1,526

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From: Round Rock, TX

Probably the sender. If you've got EFI, the sender is attached to the in-tank pump. I had this same problem in an '86 Bronco.

Dec 23, 2003 | 03:27 PM

Manwith3fords

Senior User

Joined: Jul 2003

Posts: 423

Likes: 0

From: Nova Scotia, Canada

Check for a soldered connection in the wiring near the front tank. It will have 2 wires soldered to 1 wire and it is connected to the sending unit. My truck acted the same way, even with a new sending unit so I inspected the wiring and found a very corroded connection.

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