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What would cause my gas gauge to read empty even tho it has gas in it

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  • Cars & Trucks Master
  • 772 Answers

Hi,sender unit in gas tank faulty,there is a float that when it shows empty its normaly the float thats sunk.
replace and it should be fine.
hope this was some help.

Posted on Apr 17, 2015

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  • 2 Answers

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Posted on Jan 02, 2017

MikenAsh
  • 32 Answers

SOURCE: gas gauge

The float that moves the gas hand is possibly stuck in the tank. If there's isn't an access hole in the rear of the vehicle you'll have to drop the tank. Unless it becomes free on it's own. Hope this is helpful. Please rate. Thanks

Posted on Sep 28, 2008

CMV9
  • 594 Answers

SOURCE: gas gauge reading empty even when tank is full

Usually if the gas gage does not work yes it is true it may be the sensor if it is electronicly controlled. the sncor will more than likley be in the tank. here is how to remove your gas tank.

  1. Before servicing the vehicle, refer to the precautions section.
  2. Relieve fuel system pressure.
  3. Drain the fuel tank.
  4. Remove or disconnect the following:
    • Negative battery cable
    • Fuel filler and vent hoses
    • Fuel tank skid plate
    • Fuel tank wiring connectors
    • Fuel supply and return lines
    • Fuel tank
    • Fuel pump assembly
      7924bg17.gif Fuel pump assembly mounting
To install:
  1. Install or connect the following:
    • Fuel pump assembly
    • Fuel tank. Tighten the bolts to 27 ft. lbs. (36 Nm).
    • Fuel supply and return lines
    • Fuel tank wiring connectors
    • Fuel tank skid plate
    • Fuel filler and vent hoses
    • Negative battery cable
  2. Start the engine and check for leaks.

Posted on Apr 16, 2009

  • 1 Answer

SOURCE: 2006 Chevy Trailblazer fuel gauge stays on empty

It requires a new fuel tank sensor that is $600 for the part.

Posted on Aug 28, 2009

  • 468 Answers

SOURCE: 2000 Buick Century gas gauge reads full all the time

You're either looking at a short in the wire that goes to the fuel sender, or a bad fuel sender. If it was just a broken wire, it would read empty instead. The fuel sender is a permanent part of the fuel pump, so that has to be replaced as a unit.

Posted on Oct 20, 2009

DrSpeedo
  • 294 Answers

SOURCE: gas gauge problems

Common problem on the 03-06 Envoy instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Envoy fuel gauge problems

Posted on Sep 30, 2010

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Gas gauge reading empty even when tank is full


Usually if the gas gage does not work yes it is true it may be the sensor if it is electronicly controlled. the sncor will more than likley be in the tank. here is how to remove your gas tank.

  1. Before servicing the vehicle, refer to the precautions section.
  2. Relieve fuel system pressure.
  3. Drain the fuel tank.
  4. Remove or disconnect the following:
    • Negative battery cable
    • Fuel filler and vent hoses
    • Fuel tank skid plate
    • Fuel tank wiring connectors
    • Fuel supply and return lines
    • Fuel tank
    • Fuel pump assembly
      7924bg17.gif Fuel pump assembly mounting
To install:
  1. Install or connect the following:
    • Fuel pump assembly
    • Fuel tank. Tighten the bolts to 27 ft. lbs. (36 Nm).
    • Fuel supply and return lines
    • Fuel tank wiring connectors
    • Fuel tank skid plate
    • Fuel filler and vent hoses
    • Negative battery cable
  2. Start the engine and check for leaks.

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1 Answer

Calibrate a fuel gage (gas)


Assuming you don't have some kind of Space Shuttle technology to work with, the best thing to start with is an empty gas tank. When you install the sending unit the little float will be hanging down and the gauge should read empty. You can do some minor adjustments to the float while you are monkeying around with it so that, for example, "Empty" is not empty. This way even if the gauge is reading empty you will know that you have a few gallons left in there as a back up reserve so even if you are reading in the reserve range that you know you will still have a couple gallons left in the tank when you hit the big "E".

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