Question about 2005 Chevrolet Malibu

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I a have a 2005 chevy malibu and the fuel guage goes from full to empty in about 15 seconds....I just replaced the float and the sensor sending unit in the fuel pump with a brand new one but I still k

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6ya6ya
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Posted on Jan 02, 2017

  • 10 Answers

SOURCE: p0171 and p0463

Replace the fuel pump module (inside the fuel tank) it has 2 level sensors on it. The po463 code is an open condition on the high level sensor, one sensor reports to the ECM, other to your gas gauge on the dash.

Posted on Mar 14, 2009

  • 6 Answers

SOURCE: i have a 2005 chevy silverado 1500 2wd 5.3. my

Check the wire behind the guage.If not tight it will make the hand bounce.

Posted on Mar 18, 2009

paconos2007
  • 19 Answers

SOURCE: fuel gauge quit working

check grounds wires

Posted on Apr 23, 2009

  • 126 Answers

SOURCE: Replaced Fuel Sending unit on 1986 Chevy Truck

Check the ground wire at the wiring harness at the fuel tank. If it has a good connection then check the power wires to the tank. You may have a bad pigtail going to the tank. A replacement harness is available at NAPA.

Posted on Mar 29, 2010

airjer995
  • 5332 Answers

SOURCE: How do you change the fuel sending unit on a Chevy

The fuel "level" sending unit is located on the side of the fuel pump module, see red arrow on picture below. The fuel tank will need to be dropped and the fuel pump module removed in order to replace the fuel level sending unit. You can expect to pay a couple hours of labor to remove the tank and replace the level sending unit.
airjer995_9.jpg

the fuel tank pressure sensor is located on top of the fuel pump module. The fuel tank will still need to be lowered to get at it but the fuel pump module does not need to be removed from the tank to replaced it.

Posted on Nov 21, 2010

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2 Answers

When my fuel tank is full the guage registers empty


Could be a problem with the gauge in the instrument cluster, or the wiring that goes back to the tank, or the sending unit in the tank.
The sending unit has a float much like your toilet which could stick or fail to move.

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It sounds as if the fuel tank sending unit is faulty. This is a small float connected to a variable resistor on the fuel pump/sending unit assembly. Unfortunately this assembly is fairly expensive (over $300) and the fuel tank may need to be removed to replace it.

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My 2004 chevy malibu will say it has a full tank of gas then it will say it is empty and then go back and forth and so on and so on


Check the connection at the tank,and if it is secure,replace the fuel sending unit,you may have to purchase the whole fuel pump assembly to get the sending unit.

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1 Answer

2005 Chevy Malibu the gas guage has stopped working. The guage will go from full to empty over and over. The gas cap light comes on and now my engine light is on constantly. How do I get this fixed for...


hey the reason your gas gauge is going from full to empty is that your fuel pump which is in the gas tank has a sensor that relays how much gas the tank has in it, the sensor is gone bad and will have to be replaced. And your engine light problem is probley due to putting gas in the car while it is running, my wife has a 2005 malibu and we have had the same problems with her car hope this was helpful

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1 Answer

Fuel gauge on 1986 e250 doesnt work


CK THE FUEL GUAGE BY GROUNDING SENDING UNIT GUAGE WIRE IF GUAGE GOES TO FULL SUSPECT BAD SENDING UNIT IN TANK ,BUT I HAVE SEEN THESE HAVE BRASS FLOATS AND THEY WILL FILL UP AND SINK TO THE BOTTOM TO INDICATE EMPTY

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1 Answer

Fuel guage & water guage are not working properly the fuel guage reads ful then will go to empty after you drive it for awile - the water guage only goes up to a quater


The gas tank sending unit has a float on it to register the amount of gas in the tank. The float is probably faulty which will cause erratic readings and is a fairly common issue with some GM units. Replacement of the sending unit should resolve that issue. As far as the coolant temperature gauge, it could be a faulty temperature sending unit or a thermostat that is stuck open or someone removed the thermostat. This will cause the engine to never reach operating temperature which in turn makes the engine run rich and can clog cat. converters and destroy some sensors.

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1 Answer

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Sep 12, 2009 | 2005 Chevrolet Malibu

3 Answers

Gas guage no longer works when below half a tank.


You are probably looking at dropping the fuel tank down and removing the float and sending unit ( all in one unit). Once it's taken apart, you may see that you can fix it or you may have to replace it.

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2 Answers

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