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Fuel gage not working

Douse not show correct leval

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Replace fuel pump sender unit , check first for corrosion on contacts connector , test wires , how does the car run ?

Posted on Jan 22, 2013

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1 Answer

1 location 1988 mercedes fuel gage fuse box


Check power and ground at the fuel pump. If good, you may have a bad fuel sending unit (pump)

Nov 12, 2016 | Mercedes-Benz Cars & Trucks

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My 300m has been messing up. The fuel gage will stay on empty, lights wont work, the heater wont shut off, the windshield wipers wont work & the odometer doesnt show. Any way these things are related?


They are related in the way that they don't work correctly, so yes they are related. Did you get something wet? Check your fuses, sounds like one or two may of burnt out. What have you done to the vehicle lately.

Jun 22, 2015 | Cars & Trucks

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Fuel gage fuse


The fuel gage shares the same fuse as all the gages, so if the fuel gage is inop and all other gages are working then you have another problem. The most common cause is that the sending unit for the fuel gage inside the fuel tank is defective, that is true 99% of the time in my 35 years of repair work.

Jan 20, 2012 | Ford F-250 Cars & Trucks

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The fuel gage works some times and some time it dont ..the gas tank can be full and the gage show empty are maybe half full ....after driving 15 or twenty min.it may go to the correct level


Hello
This problem is caused by only thing, it is a defective fuel level sending unit inside the fuel tank. To replace this part requires the fuel tank be removed from the vehicle.

Aug 22, 2011 | Kia Sorento LX Cars & Trucks

1 Answer

Gas gage does not work wind tank is full show not full


you fuel gauge has a float inside the fuel deposit tank and if this float has absorbed fuel it will not read the correct level ,either replace the whole unit or take the plastic float off and tie a wine bottle cork to the end of the arm ,make sure its not a french wine bottle cork though ,

Mar 25, 2010 | 2005 Ford Freestyle

2 Answers

MY GAS GAGE ON MY 1999 CHEVY VENTURE DOESN'T WORK. IT ALWAYS SAYS FULL. DO I NEED TO REPLACE THE WHOLE GAS TANK?


NO, on the fuel pump assembly is a swinging type arm with a float on the bottom end and some metal teeth on the other, as the fuel leval goes up or down these teeth contact a plate on the body of the fuel pump assemby that send a signal to the gauge. Now either your float arm is sticking, guage is bad, or the sending unit is bad. I would suggest the sending unit, it is availble as a repair unit, you dont have to buy the whole fuel pump. The gauges usually last the life of the car.

Feb 10, 2010 | 2000 Chevrolet Venture

1 Answer

2008 x5 v8 my gas gage and on board computer wrong readings


Faulty Fuel Pump, and run an injection cleaner into your gas tank (you can buy a bottle at your local parts shop) then get the fuel filters checked or replaced.

Chances are contaminated gas clogged your fuel works.

For a quick fix: Open the gas cap at 1/4 tank to relieve the vacuum. it will make your pump work less.

Nov 06, 2009 | 2008 BMW 550i Sedan

2 Answers

I have a 94 chevy s10 and my gas reads empty while i drive.but when i shut off the truck the gauge moves to different readings.


Is......the problem--"the gas gage reads empty when there is fuel in the tank. OR, The gage moves when the key to turned off ?

If it's the first,
You will need to test the gage and through process of elimination, determin if the Sending unit inside the fuel tank has gone Bad.

If its the second ? - Electrical gauges will move when powered down. Normal

Testing the gauge may not be easy - just depends on your ability.
It is a simple 2-wire gauge circuit, when disconnect (usually need the fuel tank) the gage reads in one direction (either full or empty)
then when shorted-the gage reads in oppisite direction.

Of course you must select the correct wires or you may short out the wrong circuits!! Most GM vehicles use a purple wire & black wire.

A quick method I have used to check the in-take part of the gauge is this.
1st. know there is gas - 1/2 tank works best.
2nd driver's door open, key in run position, engine not running.
3rd gently lift up on the door then let if come back down, gently.
just enough to cause the gas to slosh around.
4th - keep an eye on the gas gage, a bad sending unit in the take will show up as a "twitchy" needle.

Of course, if the gage never leaves empty - sloshing won't work.
I have a known good sending unit I can plug into the vehicle and simulate different levels of fuel - if the gas gage works, I know the problem is in the tank.

Let us know.

Dave

Feb 28, 2009 | 1996 GMC Sonoma

4 Answers

Fuel gauge


there is a sending unit in the tank this has probably clogged or wore out it has a filter on it, with gas debries this will make your guages stop working correctly

replace sending unit by dropping tank with gas out of tank and then pull out sending unit replace with new one

May 21, 2008 | 2000 Ford Taurus

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