Question about 1996 Ford F150 Regular Cab

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Fuel Guage Goes To Full

1996 Ford 150 Dual Tanks. Fuel gauge always goes to full when key is turned on. Have unplugged tank sending units and tank selector fuel gauge goes to full anyway. Please Helpppp

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  • Anonymous Mar 14, 2014

    ford courier dual cab fuel gauge on engine is off

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If you have pulled the sending unit wire from the sending unit the gage in the dash is bad .

Posted on Sep 05, 2009

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1 Answer

Why would Fuel gauge fluctuate erratically then shake at blinding speed?


Bad sending unit, bad ground, bad gauge, I have seen sending unit go bad they will work part way.

Jan 02, 2016 | Cars & Trucks

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Of readings are inconsistent with known fuel levels, Ground (or connect to a tester light) the sender unit wire and watch if the gauge rises.

May 20, 2014 | 1985 Ford F150

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1984 Ford F150 Fuel gauge reads empty


I would bet the sending unit is bad but lets check it, a good test i use is that i have a used sending unit i connect to wiring to test the gauge and wiring, if the gauge moves when i move the testing unit then i know the gauge is good and the wiring to, locte the connector at fuel tank, and unplug it, this will be the one the leads to top of the tank and the connector will be on the side be the frame on drivers side, the way you know you have the right connector will be the truck will not run as this connector has the sending unit and pump wires in it, if the gauge goes to full then you know the wiring is good and the gauge is good, you can jump the two wires and gauge should go to full also. the problem is you must get the right wires for sending unit or you may pop fuse, let me see if i can get you a wiring diagram or just do the full test by unplugging connector.

Okay, your sending unit has a yellow and white wire, thats the sending unit wire, the other is a ground and we wont worry about that. so if you want to see if gauge will go to empty or full just unplug connector and gauge will move to full then if you take a wire and jump the yellow wire with white stripe to a good ground the gauge will go to empty, the thing is your gauge is on empty so sending unit may be grounded out, good day10_21_2012_4_15_34_pm.gif

Oct 21, 2012 | 1984 Ford F 150

1 Answer

2007 F350 4x4 regular cab V10 gas guage quit working I had the sending unit and fuel pump changed the fuel guage went to 1/4 and sat there. Any tips? Fuel guage wont work.


I'm assuming this has dual tanks, do you know if it is not working on both tanks ?
Most people would check the circuit for the gauge at the tank. The sending unit grounds the gauge on the dash.

Aug 31, 2012 | 2007 Ford F-350 Super Duty XLT

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I just replaced the fuel pump in my 1996 explorer and fuel filter and put 5 gals of gas back in the tank now the fuel guage is registering full and will not work


Eewww. That's not good. And you're not going to like what I say. I think you bent the fuel gauge sender unit, or misaligned something when you put it back in tank. Try unplugging the connector and plugging it back in. See if that helps the gauge to register right. Here's a quick check to see if your dash gauge is working right: Unplug connector again at tank and use a jumper wire to ground the dash gauge sender wire. With key turned to on and the fuel gauge wire grounded, the gauge should jump up to half or full. If it does, there's a problem with your sender unit in the tank.

Nov 07, 2011 | 1996 Ford Explorer

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Fuel guage on 1991 ford f-150 is pegged at full always


Ford and Chevy are opposite on how the fuel gauge reacts to shorted or open conditions and I can't remember which one goes which way, but at any rate, the problem is one or the other - either the wire is shorted to ground or the circuit is open. Check first at the fuel tank and see if the wire is connected. If so, try connecting a jumper wire from the metal of the tank to a good grounding point on the vehicle. If still nothing, check the condition of the wire all the way back through the circuit, looking for damage, pinch points, disconnections, etc. If there is nothing obvious, disconnect the gauge wire from the tank and see what the gauge does. If the gauge goes back to E when the wire is disconnected then the problem is most likely in the sending unit inside the tank. If the gauge remains pegged, try connecting the gauge wire to ground. If the gauge now goes to E it is either a bad sending unit or a bad ground connection at the tank. If there is no change when disconnecting the wire and subsequently grounding the wire then the problem is somewhere between the tank and the gauge along that wire and you just didn't find it during your previous inspection. Good luck!

Jun 30, 2011 | Ford F-150 Cars & Trucks

1 Answer

My truck has 2 gas tanks, I try to swich the tanks but it only sucks gas out of the rear tank it doesn't matter what the selecter is on what could be the problem?


I have an '87 Ford F150 just like it and have the same problem too. Most likely the front fuel tank's internal fuel pump is not working. The selector switch sends power to the fuel pump in the selected tank, which then pumps fuel to the high pressure pump mounted on the frame ahead of the dual fuel reservoir also mounted on the frame.
Typical ford junk engineering - quality job NONE!!!

Sep 20, 2010 | 1987 Ford F 150

2 Answers

87 f150 dual tanks fuel gauge doesn't work how can I troubleshoot this with a multimeter; what voltages/ohms values are normal


I have a1987 F-150. The gas gauge for the rear tank always indicate that the tank is full when I know it is not. I try to put gas in but the tank won't let any gas in. Is there some type of sensors inside the tank that won't allow the tank to be filled or is this a guage problem?

Feb 21, 2010 | 1987 Ford F 150

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1987 fuel level guage issue


thats funny, my 87 F250 does the same thing. At 80 bucks a sender unit I have learned to live with it even tho this is what I do for a living.

The reason fuel gauges fail is because of sulfur in fuels.

Do a search on sulfur and fuel sender units failures and you will find your complaint is the same as the masses.

Jan 30, 2010 | 1987 Ford F 150

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