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Posted on Nov 15, 2010
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Why do my gas needle go from low fuel light on to exactly how much gas I have in the tank?

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Ajom oru

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  • Posted on Oct 01, 2022
Ajom oru
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Have you checked the tank?

Benjamin

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Benjamin
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Descending unit which ats like a float measuring device sliding up or down with fuel levels . Has one wire connected tht goes to harness sends signal to fuel gauge representing the ammount of tank it's down to, or what's left . Trippy or twitchy fuel reading floating guage ? Error withing descending unit on fuel pump which is inside fuel tank.

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  • Posted on Nov 15, 2010
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I'm not sure I am understanding your question. The low Fuel indicator light comes on, depending on how sensitive it is set, when you have between 2 and 5 gallons of gas left in the tank. This also depends on how accurate your fuel level sending unit is reading the fuel level in the tank. The low fuel level light depends on the level of fuel in the tank itself but other than using that sensor it has nothing to do with the fuel gauge itself. The fuel gauge may or may not be accurately showing the fuel level.

5 Related Answers

Anonymous

  • 375 Answers
  • Posted on Jan 09, 2011

SOURCE: My gas needle stopped working.

You can take out the part of the dash where the guages are and change the little sensor/fuse behind the fuel guage, they should have a replacement part at orileys or autozone

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Anonymous

  • 1 Answer
  • Posted on Feb 11, 2009

SOURCE: Gas needle moves

try supplying the radio with a new power line and earth, sounds like the radio power has been taken from the wrong place or there is a faulty earth commection.

Sam

  • 3247 Answers
  • Posted on May 08, 2010

SOURCE: my fuel gage shows low fuel just filled the tank,

you most likely have a fault in the fuel sensor that sits inside the fuel tank.

will need to be replaced if you cannot stand the annoying low fuel beep that will keep coming on.

Randy Ohler

  • 14585 Answers
  • Posted on Nov 19, 2010

SOURCE: My fuel needle is floating and the "gas light" is

no, maybe the fuel level switch, fuel gauge, or the wiring inbetween

mclaen

  • 486 Answers
  • Posted on Aug 09, 2011

SOURCE: when my 2004 pacifica gas

I think that your fuel level sending unit inside the fuel tank may be at fault. Because the sending unit is immersed in fuel, and the float arm is constantly moving as the fuel sloshes around inside the tank, the sending unit can eventually wear and send an erratic signal to the instrument cluster. Another type of failure can occur if the sending unit becomes coated with deposits from fuel that will also affect how accurate the sender signal is. Before replacing the sending unit I would try using a fuel injector cleaner that has the additive "Techron" in it to see if this would clean off any accumulated deposits on the sender and restore it to working order. I've had pretty good results using this approach on several vehicles in the past few years and if it doesn't help you're not out much more than the cost of the cleaner. Good luck, hope this helps!

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Related Questions:

0helpful
2answers

My gas light is on, took off gas cap & put back on but light still on. Any suggestins?

I suggest you read the vehicle owner's handbook to be certain what the exact function of the light is. You will need to know that in order to determine whether the light is warning you or is broken.

The fuel light usually warns the fuel level in the tank is low...
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Low fuel gauge on when tank is full

need to replace the sensor
0helpful
2answers

How do i know i have a bad float in dual tanks?

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.
1helpful
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Today while I was driving, The instrument where it telles you how many miles left till empty read 27mi. all of a sudden it started counting down rapidly, within seconds it had went from 27 mi to 4mi left...

Sounds like float in fuel tank is sticking. Usually caused by using cheap gas. Fill it up and add a bottle of STP gas treatment. It might take more then one tankful w/STP to clean it completely. TIP: don't rely on the computer generated "mileage left" especially when that low on fuel, that is only an estimate. And also don't let it get that low on a regular basis because it will damage your fuel pump, fuel is used to cool electric pump in fuel tank and running it that low will shorten the life of your fuel pump.
4helpful
1answer

My gas needle stopped working. how will i know if gas tank is empty. If van sits in park and running the needle drop to E and the low fuel light comes on, then when you drive it goes back to a full tank....

You can take out the part of the dash where the guages are and change the little sensor/fuse behind the fuel guage, they should have a replacement part at orileys or autozone
0helpful
1answer

Gas needle isn't working. We put gas the needle goes up then a few minutes later gas light comes on saying no gas and gas needle is on E

Sounds like the fuel sending unit in the gas tank is faulty. Also may want to be sure all wiring is in good condition before replacing fuel sending unit. The fuel tank will have to be removed to perform fix.
4helpful
2answers

Low fuel light On

The problem is with the fuel level sensor, it's attached with the fuel pump and located inside the fuel tank, sometimes the water and other impurities inside the fuel causes this problem, solution is to get the fuel pump opened by a professional and the problem might be solved by some simple cleanup. Hope it helps and comment if you need more advice. Please don't forget to rate the answer, it helps me, thanks!
1helpful
2answers

2000 Ford Expedition Starting problem

If the fuel gauge drops off when you are driving then its a sending unit problem that means you have to drop the tank and replace the float and sending unit. This is a common problem for alot of cars because of cheap gas. If you have to drop the tank check the fuel pump canster for dirt because of cheap gas. Replace the fuel pump strainer and fuel pump filter. If the car or truck has about 100,000 miles you might want to change the fuel pump at that time also just to cover your back. If you take it to a shop they will charge you at least $900 to start. But if you do it yourself it will cost you about $200 dollars maybe alittle more.
0helpful
1answer

Gas needle moves

try supplying the radio with a new power line and earth, sounds like the radio power has been taken from the wrong place or there is a faulty earth commection.
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