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Put in gas gage will not move showing empty - 2002 Mercury Mountaineer

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The sending unit is in the tank part of the fuel pump

Posted on Feb 01, 2010

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1 Answer

My gas gage is always moving It says empty then minutes later it says full and so on and I don't know how to fix it


remove your gas tank and change a new one so that your Gage will move accurately

Jun 30, 2015 | Cars & Trucks

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My fuel gage registers empty when I just fill with gas


Most likely it is either the fuel level sending unit attached to the fuel pump or the stand alone unit (there are two sending units, both located in the tank), or, as counter-intuitive as it seems, it could be the speedometer assembly. Personally, I lean toward the latter.

Jul 29, 2014 | Infiniti FX35 Cars & Trucks

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Why is Gas gage stuck on empty


The sensor in your gas tank needs to be replaced the good news is you can but just the sensor and NOT have to buy the entire unit.

Jul 11, 2014 | 2000 Chevrolet Blazer

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Gas gague not working in 93 gmc sierra


The fuel level gage sending unit is defective, very common problem. The sending unit comes with a new fuel pump and is referred to as a module, also make darn sure you replace the fuel pump connector at the fuel tank, solder and shrink tube the new connector on, DO NOT USE CRIMP CONNECTORS.

Jun 30, 2017 | 1993 GMC Sierra K1500

1 Answer

Gas gauge is moving up to full when i give it gas


Sometimes those gages go bad, or it could be the float on your sending unit is bad, that is in the gas tank, I have an older model truck that can be on empty and I can put like 10 dollars in it and it will show like it has a full tank, and we know with gas prices these days that isn't much gas lol, but more than likely it's sounds like to me that your gauge is faulty.

Dec 24, 2011 | 2002 Buick Regal

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

1 Answer

Fuel level sensor in tank bad????


Yes it is all one unit, and yes that is what the problem is. don't use aftermarket parts, use OEM, (Delco Remy) they are much better quality.

Sep 08, 2008 | 2000 Chevrolet Blazer

1 Answer

When empty fuel gage show full, I put 2 gallons of gas and it show 1/2 full


If your lucky, it's the wire harness from the frame to the gas tank. If your not lucky, it's the sending unit in the gas tank and that's expensive.

Jul 29, 2008 | 1997 GMC Jimmy

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