Question about 2002 Buick Rendezvous

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Fuel gauge doesn't work

I chaged the fuel pump and now the fuel gauge says that I always have a full tank or and empty tank and nothing in the middle. Is the float on the fuel pump the likely problem?

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  • Anonymous Mar 15, 2014

    Draws fuel from tank but won't pump into carburetor.

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(not the float per say) the sending unit on the pump assembly is very fragile , if you were to look very closely at the button that makes contact to the variable resistor plate while moving the float up and down you might notice that the button can move away from the resistor board and loose contact , thus causing erratic readings at the dash gauge , i have had to remove the float arm and bend the contact arm so as it would have more pressure to the resistor board , or replace the sending unit itself , but when installing the pump Assembly into the tank it can be damaged easily , be careful when installing , its no fun doing it once let alone twice.

Posted on Dec 20, 2008

  • Rick Byrd
    Rick Byrd Jan 03, 2009

    follow up - have you solved this problem ?

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  • 62 Answers

U may have bent the fuel level sending unit arm os did not seat the fuel pump in place properly

Posted on Dec 20, 2008

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1 Answer

My gas gauge stopped working,says it's full,I go to put gas in it and can't get gas into tank ,it wants to come out,but knowing it's empty,was wandering if it needs a new sensor?


Putting gas has nothing to do with you fuel gauge problem
Must problems to add fuel and comes out can be cause by air flow in the tank, also it is recommended to fuel with the engine turn off so the pressure from fuel pump going back to the tank will not affect the fueling , about you fuel gauge not working properly can be cause by a electrical problem such wiring or defective gauge or can be fuel sender problem with most the time it is install on fuel pump assy.

Apr 02, 2015 | 1997 Cadillac Eldorado

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How to adjust gas gauge to read right not reading way over filled like it does now. When 1997 chev 350 vortec truck gauge is at 1 st red mark close to empty, better not past gas station ! ! !


the fuel level sender is inside the fuel tank, part of the fuel pump assembly. did you or was the tank replaced before??they may have bent the float arm on reassembly . you can buy the sender from your parts supply store .you will have to drop the tank to do this it clips onto the side of the pump assembly. run it almost dry first as the tank is big n very heavy even 1/4 full. you can try to bend the old arm

but its very hard on the "sender" as for level indicator full to empty, think of the shape of the tank narrow at top to widest point in the middle (full to half) wide middle to narrow bottom( half to empty)

its just an overall volume thing

Mar 07, 2015 | 1997 Chevrolet C1500

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Fuel gauge says empty but tank full


yes it sounds right. unfortuneately the float is attached to the pump

Aug 13, 2013 | 2007 Dodge Nitro SXT

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Put in new fuel pump and sending unit. but my gas gauge doesnt always work. sometimes is does and sometimes it doesnt


if it worked for a short period of time after doing the pump/sending unit the check the connections going to the pump/sending unit they would have been moved around doing the pump

Aug 11, 2012 | Cars & Trucks

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

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

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Fuel gauge stops working at half empty and will not let you fill up gas tank at full outlet speed from gas pump


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May 05, 2010 | 2006 Chrysler Pacifica

2 Answers

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.

Apr 16, 2009 | 2002 Isuzu Axiom

1 Answer

1989 Saab 900 low level fuel light


You don;t say whether the fuel gauge is reading accurately, or whether it's always on empty. If the gauge is always showing empty, it's most likely a problem with the sending unit in the fuel tank. Check the resistance across the two terminals of the sending unit.

On a C900, the fuel sender level unit is separate from the fuel pump and located on the right side top of the tank, accessible by removing the trunk floor lift up panel (the pump is located on the left side top of the tank.
Possible problems are: electrical line off or broken, float not working (it's fairly delicate); or gauge not working.

Test the resistance of the sending unit with the lines disconnected, the resistance should be 2.6 to 3.8 ohms full tank, 63.3 to 67.5 ohms empty tank; and test for voltage across the top of the sender unit, if no voltage, that's likely the problem!

If the gauge is otherwise reading accurately (showing 'full' for a full tank, etc) then the problem is likely a gauge malfunction and can be simply replaced.

Good luck!

Saabreur

Jul 10, 2008 | 1989 Saab 900 4 Door

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