fuel gauge not working

1995 Bronco

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Joined
Apr 17, 2020
Messages
5
Location
Kansas City Missouri
hello everyone, so today my problem is that when ever you turn the key on to start the truck the gauge goes way past full and it will stay there as long as the keys in the ON postion, but when you turn the key off it slowly goes back down to about 1/3 of a tank and will rest there. i have a 1995 bronco with a 351w in it if it helps. the prevouis owner said they had replaced the sending unit about 10-15 years ago i think and from day 1 the gauge has been messed up. so what do you guys think do i need to drop the tank and out in a new sending unit or could it be a bad float, or could it be a bad ground somewhere and if it is then where would the ground be? let me know what you guys think. thank you!
 

Tiha

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Jul 22, 2020
Messages
59
Location
Midwest
It is easy to test a ground issue on the tank by adding a ground to the tank.
Just for testing it doesn't have to be anything fancy. Just a makeshift wire from the tank to a clean spot on the frame.
Clean off an area on the pinch weld of the tank and on the frame. If you can reach it, attach one end right on the sending unit somewhere and then to the frame.
Strip both ends of a wire and use a couple pair of vice grips to attach the wire to the tank and frame.

See it that affects the fuel gauge before you drop the tank.

Otherwise drop the tank, pull the sending unit and manually move it while watching the fuel gauge.
 

miesk5

96 Bronco 5.0
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Yo 1995 Bronco,
WELCOME!
Testing & Connector Pin-Outs in 92-96 Bronco; Sender Range: Full = 160 Ohms; Empty = 16 Ohms; "... gauge that pegs past full indicates an open circuit (broken wire; unplugged connector; corroded terminal; burned sender) on the Y/W wire.

■□■
ASAP, find out if speed control recall work, if equipped was completed @ Recalls Look-up by VIN (Vehicle Identification Number); or @ Welcome to Ford Owner | Official Ford Owner Site; or ... have VIN ready. While there, see most Ford dealer maintenance/repairs done @ any dealership nation-wide.
"Summary: ON CERTAIN PICKUP TRUCKS, PASSENGER VEHICLES, SPORT UTILITY VEHICLES, AND MOTOR HOMES CHASSIS, THE SPEED CONTROL DEACTIVATION SWITCH MAY, UNDER CERTAIN CONDITIONS, LEAK INTERNALLY AND THEN OVERHEAT, SMOKE, OR BURN. THIS COULD RESULT IN AN UNDERHOOD FIRE."
See this guide by jowens1126 to confirm recall status @ 93 & 94-96 Cruise Control Recalls Repair
Note that the 93 recall is different than 94-96.

1995 Bronco Dealer Brochure @ 1995 Ford Bronco

1995 Bronco Drivetrain, Powertrain Service Manual - Google Drive
&
1995 Bronco Chassis, Service Manual - Google Drive
To switch between folder list & grid views, click the button to the right of the "DOWNLOAD ALL" button in the upper right corner of the window) by HawkDriver
 

1995 Bronco

New member
Joined
Apr 17, 2020
Messages
5
Location
Kansas City Missouri
alright here is an update, so i striped the wire at the fuel pump and grounded it out to the frame and nothing happened and i tested all the connectors and they all read good besides the fuel gauge in the dash cause i just couldn't get to it. but miesk5 you are a huge help, its like you know how to fix things and where you can find more info so thank you very much. so i guess now its down to dose anyone know how hard it is to pull the tank? is it easy? is it hard? and can i do it in a driveway of my house with no expansive tools like that. let me know what you think. Thanks!
 

BroncoJoe19

Active member
Joined
Dec 26, 2007
Messages
2,087
Location
New Jersey
An option to dropping the tank is to create an access panel.
Certainly there are links to how to do that.
Personally I would follow that route.

Remember to use a plastic or brass punch when removing the sending unit from the tank.
 

1995 Bronco

New member
Joined
Apr 17, 2020
Messages
5
Location
Kansas City Missouri
An option to dropping the tank is to create an access panel.
Certainly there are links to how to do that.
Personally I would follow that route.

Remember to use a plastic or brass punch when removing the sending unit from the tank.
see i would to that but my bed is really rusted under the carpet and i dont have a welder on hand
 

BroncoJoe19

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Dec 26, 2007
Messages
2,087
Location
New Jersey
Welding is not in my skill-set, so i'd probably just use JB-Weld, and cover it with flex seal.
Most of the cutting can be done with a pair of tin snips.

Regarding dropping the tank, IIRC, it has a 40 gallon tank, and depending upon the amount of fuel in it, it could crush your chest. Most drain the tank, and use a transmission jack and a piece of plywood to support the tank while they lower it.
IIRC there are a couple of straps that hold it in place, and one needs to disconnect the fuel line/s and electrical connection to the pump.

Oh.. and I guess the fuel filler connection.
 

1995 Bronco

New member
Joined
Apr 17, 2020
Messages
5
Location
Kansas City Missouri
Welding is not in my skill-set, so i'd probably just use JB-Weld, and cover it with flex seal.
Most of the cutting can be done with a pair of tin snips.

Regarding dropping the tank, IIRC, it has a 40 gallon tank, and depending upon the amount of fuel in it, it could crush your chest. Most drain the tank, and use a transmission jack and a piece of plywood to support the tank while they lower it.
IIRC there are a couple of straps that hold it in place, and one needs to disconnect the fuel line/s and electrical connection to the pump.

Oh.. and I guess the fuel filler connection.
ya thats what im going to do is drain my tank then use a jack to take it out
 

BroncoJoe19

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Dec 26, 2007
Messages
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Location
New Jersey
Please consider taking pictures as you go along and posting an instructional tutorial for those who follow.
Have fun, and good luck!
 

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