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Repair broken gas gauge stays stuck on full - Grand Am Pontiac Cars & Trucks

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  • Pontiac Master
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Check for a shorted wire at the tank sender unit as it is not allowing the variable resistor in the tank to regulate the voltage going through the gauge.. Or replace the tank sender unit.

Posted on Jul 29, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: gas gauge

The sending unit in the fuel tank most likelt went bad. It is probably a coincidence that it happened at the same time as the oil change.

Posted on May 26, 2008

tripletauto
  • 1450 Answers

SOURCE: fuel gauge stuck on full

need to replace the sending unit

Posted on Sep 19, 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

abauto
  • 353 Answers

SOURCE: fuel gauge stuck on full

The fuel sending unit in the tank is broken. It acts as a variable resistor that tells your gauge what level the tank is at. When you remove the pos. lead it shows infinite ohms. and when you short it to ground it shows 0 ohms.

Posted on Jul 28, 2009

  • 64 Answers

SOURCE: my gas gauge on my 93 ford mustang quit working.

i suspect a broken wire between guage and sender unit in tank, but the sending unit could be bad,find the wire to the float guage in the tank and disconnect it, if fuel level does not change then then touch the wire to a ground, if the guage changes then the wire is ok and the unit is bad, if it does not change check wiring and guage for faults.

Posted on Jul 31, 2009

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The fuel leveler in the gas tank is broken or stuck. Should be replaced.

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Most gauges work ok but the sender unit in the tank is what causes most problems. I would be looking for a broken/loose wire to the sender or a faulty sender unit

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I have a 2000 3.8 impala that wont take gas and the gas gauge stays full.


Wont take gas and the gas gauge stays full? This question really doesn't make sense. But if you cant put anymore gas in the car and the gauge says full then you have a full tank of gas. If the gauge always says full even when the gas tank is not full then the sender unit is failing or the gauge itself.

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1 Answer

Gas gauge don't work stays on full


Ur GAS FLOAT is stuck up and u have to pull out or a mechanic, to check/repair it and may have to replace! Check also the wiring, wire might have been grounded to the expose body parts and sets ur gauge to FULL! Hope that can help u out!
Taah!

Nov 12, 2010 | 1999 Pontiac Sunfire

1 Answer

2003 Impala fuel gauge used to bounce and now stays at full. When tank is empty, gauge shows 1/2-3/4 full. How to fix?


most of the time this is simply just the float in the gas tank getting stuck had the same problem in my car. unfortunately you have to access the gas tank to fix, but it is an easy fix. hope this helps any questions let me know.

Jan 25, 2010 | 2003 Chevrolet Impala

1 Answer

Gas gauge stays on full


very common. The sender in the gas tank is the problem.
It will need to be replaced some day
Both my gas tanks do the same thing in my F250. 1 tank stays full all the time and the other drops from full to about a half tank when I get to half a tank and then works so so till empty.

Dec 22, 2009 | 1992 Pontiac Firebird

1 Answer

Gas gauge stuck past full when truck is on


Trace the wiring from the fuel tank back to the instrument cluster - you have a short grounding out some place. When the sending unit grounds out it pegs up past full.

Oct 27, 2009 | 1992 Chevrolet S-10

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