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What all wires running back to the fuel tank r used to run the fuel gauge

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  • 228 Answers

Depending on the vehicle and vintage you will usually have two. One going to the sender the other will be a ground. That ground can be used with other funtions .

Posted on Nov 24, 2014

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Posted on Jan 02, 2017

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shaggyrat
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SOURCE: fuel gauge

there is a sending unit in the tank this has probably clogged or wore out it has a filter on it, with gas debries this will make your guages stop working correctly

replace sending unit by dropping tank with gas out of tank and then pull out sending unit replace with new one

Posted on May 21, 2008

  • 1 Answer

SOURCE: fuel gauges no working 1989 ford f-150

drop the gas tank and either replace the fuel sending unit connected to the fuel pump, or you can try to clean the contacts w/ a pencil eraser, just be gentle

Posted on Mar 13, 2009

  • 563 Answers

SOURCE: fuel gauge and speedometer not working

Check the speedo cable. It runs from the transmission to the driver-side firewall. Check the fuse-box for the fuel-gauge fuse.

Posted on Oct 30, 2009

roniecon
  • 6826 Answers

SOURCE: How to test fuel gauge in dash 89 chev 2500

To test the gauge,unplug the connector at the tank,the fuel gauge will go to full,then ground the wire to the fuel gauge,and the gauge should go to empty,I use a test light for grounding the circuit,to keep from grounding the wrong connector,when doing so,the test light will glow dim,and the gauge will go to empty slow.

Posted on Apr 20, 2010

Testimonial: "Great advice. The tip about using a test light was above and beyond."

  • 701 Answers

SOURCE: Gas tank will not switch and gas runs out of fuel

Hello tlsnyder52: My name is Roger and I will help you. The problem you have is in the fuel select valve. This was a factory recall a few years ago. The recall number is 91S39.What happens is the valve sticks when you switched tanks. This returns all unburnt fuel to the tank you are not using. Basically fills the other tank while the one you are using goes empty. When you fill both tanks the returned fuel has nowhere to go. The fuel has to go somewhere and pushes out the vent. This is not a hard valve to replace. But I would check as if the recall was not performed it may be under warranty recall. The service kit number is F1UZ9B263B and can be obtained from a Ford dealer. Should You need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger

Posted on Jan 26, 2011

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1 Answer

Why won't the fuel gauge work?


The power wire from the sending unit runs to the gauge. Since it is showing 3/4 all the time. It is a break in the wire or really high resistance. I would check resistance of the ground wire first. If it is good(less than 5.0 ohms), I would replace the power wire from the pump to the gauge. I assume the gauge goes to empty with the key off. If not the gauge is bad.

Oct 05, 2016 | 1997 Chevrolet Blazer

1 Answer

Help my 04 chevy cavalier he gas gauge will not work.. I have replaced the insterment cluster and the part in the tank.. When i start it my gauge will read full but will drop soon as you take off and there...


to check it . wire at the fuel tank gauge unplug it the black and purple wire for gauge. put a variable resistor , fuel gauge is rated 0 to 90 ohms. So variate the resistor and see if fuel gauge move. if it does fuel sender have problem or inside tank wire

Aug 26, 2013 | 2002 Chevrolet Cavalier Coupe

2 Answers

1993 mitsubishi montero rs fuel gauge doesnt work


in alot of cases it is a ground issue in the wiring system. would try moving them around some by the tank and see if this helps to find the one and yes in alot of cases you have to drop tank but not all the way. just enough to check wires. fuse that runs gas gauge runs all gauges....hope this helps some and good luck.

Aug 13, 2012 | 1993 Mitsubishi Montero

1 Answer

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

1 Answer

Fuel gauge is showing amout of fuel like backwards on gauge. vehicle has 1/2 tank of fuel but gauge is showing like in the 100mph speed gauge


I think that the fuel sending unit in the tank is broken or the wire from the unit is unhooked.to keep from running out of fuel. fill up the car and use the trip oddometer to calculate how many miles you can travel. that car has 12 to 15 gallon tank and should get 20 to 25 miles per galloni would think that start putting gas in about 250 to 300 miles. then reset trip odometer

Feb 12, 2011 | 2004 Pontiac Sunfire

2 Answers

My fuel gage recently started to behave in a weird way. It can drop rapidly like in 2 seconds to a position below the Empty mark regards of the fuel amount in the tank. Sometimes it just shoots up back to...


look for broken/loose wires/connections around the tank while someone else is observing the fuel gauge. a broken/loose ground could be at fault. the fuel sending unit sends the signal to the gauge, also, look for broken/loose wires/connections from the fuel tank to the fuel gauge if you haven't found the problem yet. if all else fais, ground the body with a temporary connection to see if that is good, body ground is needed to keep them running good.

Jan 21, 2011 | 2004 Mercedes-Benz C-Class

1 Answer

How to test fuel gauge in dash 89 chev 2500 so I can tell if the gauge or tank unit is bad. The dash fuel gauge will change 1/4-1/2 tank overnight even if the truck has not been run.


To test the gauge,unplug the connector at the tank,the fuel gauge will go to full,then ground the wire to the fuel gauge,and the gauge should go to empty,I use a test light for grounding the circuit,to keep from grounding the wrong connector,when doing so,the test light will glow dim,and the gauge will go to empty slow.

Apr 20, 2010 | 1989 Chevrolet C/K 2500

2 Answers

The fuel gauge is'nt working.I tryed to ground it


When testing a fuel guage you should disconnect the wires to it,guage should read over full,ground the float wire,turn off key then turn back on should read empty.You have to cycle the key for guage to move.If still inop the wire is broken in the harness between the tank and the dash.Voltage on the float wire is low.When tested with a test light it will barely light the light and pulsate.This test indicates the wiring is good.

Apr 17, 2010 | 1991 Chevrolet C1500

1 Answer

Gas gauge has spun past full and appears stuck behind empty peg.


the fuel sending unit in the tank is a rheostat wrapped wire it increases the resistance read at the gauge the more fuel the more resistance.
what it sounds like is a dead short either in the sending unit or the wire running to it.
to check sending unit in the tank, locate the closest wiring harness plug (in the trunk/or under car) and disconnect then check gauge reading,remember ignition must be on.
try that and get back to me if needed

Nov 03, 2009 | 2004 Nissan Maxima

2 Answers

Fuel gauge problem


there is only one part that makes this happen, it is the fuel gauge sending unit in the fuel tank.

May 13, 2009 | 2000 Chevrolet Blazer

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