Gas Gauge Blues
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Post Fiend
Joined: Mar 2011
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From: Lynchburg, VA
Gas Gauge Blues
The gas gauge in my '79 F150 Custom has been... strange. When I first got it, it read empty. Added some gas, still empty. Went to start it up one day, reads half. Last Monday it started reading past full. The needles been staying a good 1/4th inch past full for the last week and I should be down a quarter of a tank. It seems like it might be a short somewhere. Any ideas? Thanks
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Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
One of the POs spliced into a few wires for who knows what. One of these was orange, which is for the fuel gauge according to my Haynes Manual, but it has a white stripe in it.
Posting Guru
Joined: Sep 2003
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From: Northeast LA
Ground the wire going to the sending unit and gauge should peg full, if it does you know the problem is in the tank and not the wires between the tank and gauge. I've had to replace the float in the tank because of holes twice, that'd be something to check for too. Fuel will get inside the float and make it read wrong because of the level or sit on the bottom showing an empty tank all the time.
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Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Ground the wire going to the sending unit and gauge should peg full, if it does you know the problem is in the tank and not the wires between the tank and gauge. I've had to replace the float in the tank because of holes twice, that'd be something to check for too. Fuel will get inside the float and make it read wrong because of the level or sit on the bottom showing an empty tank all the time.
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Post Fiend
Joined: Mar 2011
Posts: 8,501
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From: Lynchburg, VA
Thats what Im thinking...
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