Question about 2002 Buick LeSabre

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Fuel gauge stays on full

Fuel gauge doesn't move at all

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You may have a unique problem!!! Normally I would say it is the sending unit- in the fuel tank!!!! But Buick LeSabre had a weird thing happen from time to time. Look closely at your fuel guage and focus on the PIN that acts as a stop for the fuel guage to not go beyond the Full mark. Make sure the pin is on the correct side of the pin!!! Sometimes the needle will somehow jump the pin on "E" or "F", and literally hold the needle in place.

Posted on Mar 28, 2014

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1 Answer

Why does the fuel gauge stay on full all the time?


Fuel sender unit could be faulty and showing a full tank all the time. Basically the gauge is a volt meter and the float arm adjusts the voltage going to the fuel gauge when it moves up and down. If it's stuck for some reason it'll show full when it's at the top.

A local garage or auto centre can fix this easily or if you're good with spanners, it's usually located under the rear passenger seat where you can find the access to the top of the tank.

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Gas gauge stay on full but at idle moves up and down


Replace fuel sender in gas tank, mounted on fuel pump module.

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2000 Pontiac Montana gas gauge stays on full and doesn't move the only time I've seen it moved was when the front of the van was jacked up what could be the problem?


Probably a bad sending unit in the tank,or maybe a broken tank baffle.(Either way,you're looking at taking out the tank to find out.

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1998 chevrolet astro van/fuel gauge always stays on full


Usually a sign of a faulty sending unit in the tank.
A mechanic would ground the wire to the sender to see if the gauge moves.

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1 Answer

Fuel gage stuck on full


Either there is a short in the fuel sender wiring or the sender in the tank is bad.The actual gauge is rarely bad.Good luck.


Else
The float affixed to your fuel pump in your gas tank is stuck.

It tells the dash you ALWAYS have a full tank.
You have to drop the tank, PB Blast/WD40 the float, get it to drop down.
Finally
Your unit in the tank is bad. Pull it out and move it up and down while someone looks at the gauge. If doesn't work, buy a new one. They are not that expensive.

Apr 25, 2012 | Cars & Trucks

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Fuel gauge sensor


Yes, the sending unit is in the tank. If you unplug the connector at the tank and ground the gauge's sender unit wire to metal, with key on, the dash gauge should jump to full or near full. This verifies the dash gauge is working properly, and the problem is with the sender unit in the tank. If the gauge doesn't move when grounded, then the gauge or wiring from tank to gauge is not correct.
Good luck.

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I have a 2003 GMC Envoy and my gas gauge has been flowing up and down to empty and full recently it has stayed on empty. How do I fix it?


Ensure that all of the wire connections are clean, secure and corrosion-free.

  • 2 Check your fuel gauge fuse if the gauge's indicator stays on empty when your turn on the ignition. If the fuse is good, join the sending unit connector to ground. Replace the sending unit if the gauge indictor moves to the full line.
  • 3 Ground the terminal located on the back of the fuel gauge with a jumper wire if the indicator doesn't move. If it does move, consider replacing the wire between the fuel gauge and the sending unit. A poor ground is frequently responsible for fuel gauge problems.
  • 4 Release the wire that connects to the fuel tank's sending unit. Confirm that there's no worn insulation that would permit wire contact to the body or frame. A fuel gauge reading of full generally indicates a problem with the tank unit, not the wiring.
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    1 Answer

    Fuel gauge not working properly. Says fuel tank full when fuel tank empty


    Could be 3 thing - the gauge on the dash, the wiring or the fuel level indicator in the tank. All three are not easily accessible - the best test would be to measure the voltage on the level sensor on the tank.

    It usually means removing the fuel tank and start measuring. If its ok, supply voltage to the lead towards the fuel gauge. If the gauge doesn't move it's wiring or the fuel gauge itself.

    Jun 26, 2011 | 1999 Cadillac DeVille

    1 Answer

    Just bought a '92 plymouth Acclaim with 37000 miles. It's in great shape but I'm not sure if the fuel guage is working. Only drove it home, less than 10 miles. Is the guage mechanical or...


    There's a float inside the tank that the fuel gauge works off of. If you step on the brakes or accelerate hard it causes the gas inside the tank to slosh around and you can see the fuel gauge move when you do this. If you know the vehicle has gas in it, the best way to check if the gauge is bad is to drive around enough to where you should have burnt a noticeable amount of gas. If the gauge doesn't move, then there's something wrong with it.


    Since the gauge moved when you braked hard, I would assume it's working properly because it picked up on the level change inside the tank where the float's at.

    May 19, 2011 | 1992 Plymouth Acclaim

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    THE FUEL GAUGE STAYS PAST FULL DOESN'T MOVE .97 BLAZER REPLACED ENTIRE FUEL PUMP AND CHECK PUMP WIRES IF MELTED /FAULTY .THE I REPLACED THE ENTIRE GAUGE CLUSTER. FUEL GAUGE WHEN TURNED ON IT ALSO WENT...


    USSUALLY WHEN GAGE GOES WAY OVERFULL IT'S A BAD GROUND
    QUICK CHECK USE BOOSTER CABLE ONE END ON TANK OTHER END ON BATTERY NEGATIVE IF GAGE GOES OK MAKE UP SHORT WIRE FROM FRAME TO TANK SEEM LIP
    AND ATTACH MAKE SURE METAL IS CLEAN

    Apr 19, 2011 | 1997 Chevrolet Blazer

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