Nissan Sentra

How do you replace the fuel gauge float in a 1991 Nissan Sentra?


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2015-07-15 21:42:29
2015-07-15 21:42:29

You'll most likely need a new sending unit assembly because you may not be able to purchase the float by itself. How did you determine the float needs to be replaced?


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Check the float by pining the wiring at the tank the gauge will go to full if not the wiring or gauge may be defective

The gauge would be in the dash, so yes.The sending unit (float) is available separately from the pump on most vehicles.The gauge would be in the dash, so yes.The sending unit (float) is available separately from the pump on most vehicles.

The gauge is part of the fuel pump/float assembly within the gas tank. It is probably a $500.00 repair. It is harmless.

Pull the gas tank and replace float but check all wires to the tank first

It's under the dash, behind the gauge cluster. The wires coming out of it are Black/white, Black/blue, Black/yellow, Black/pink.

1998 Nissan Pathfinder the speedometer and heat gauge quit workin?

The fuel gauge, temp gauge, and starter relay are on the same fuse (instrument panel). Does the car start? if the car starts then it is the module on the back of the instrument panel. it has 3 wires ( black, blue and yellow). once changed the guages would work fine.

If the fuel gauge isn't working on a 1999 Chevrolet Blazer it could possibly be because the float is stuck in the fuel tank. I had this problem when I got my 99 blazer, the float and sensor for the fuel gauge is on the fuel pump which is in the fuel tank to keep it temperature regulated. I had to replace my fuel pump, which ended up going bad on me, and after it was replaced the gauge works just fine.

You have to remove the gas tank, the pump assambly from the tank, and replace the float sensor.

As my understanding is, the failure of the gauge is a result of the float in the tank getting a hole in it resulting in it filling full of gas and..well, not floating (grin). Pretty simple, drop the tank, remove the float, fix or replace the float and reinstall. If you have replaced the fuel pump, float (the entire unit basically) and it still has the same problem, and Upon start-up it goes to past full and the goes down to past empty, it could be an electrical problem between the tank and the gauge. You needs to check your fuses. The 1991 to 1994 models have a 15 amp fuse in location # 17 for the fuel gauge

sticking float on the fuel pump, or malfunction in the float

Use a float level gauge and measure the distance from the carburetor body to the float arm - The correct float level is 7.5mm(0.30in.)

It is probably the fuel sending unit inside the fuel tank. Sometimes there is a cover that you can remove to replace it. Other times the fuel tank has to be removed to replace it.

your gas gauge float is in the gas tank you have to drop your gas tank and take out sending unit but if the gas gauge is not reading right you should check the ground wire on the gas tank

The gas gauge in a digital setting is run from a fuse as well as the float inside the gas tank. Check the fuse for the gas gauge to see if that fixes the problem.

The fuel pump is located in the gas tank. You have to remove the fuel tank from the vehicle. The fuel pump is attached to the fuel gauge float assembly. I am not certain on that particular year but some of the fuel pumps themselves can be removed and replaced and on others you have to replace the entire float/pump assembly.

It is probably a bad float and you will have to replace the sending unit assembly.

If you have a manual transmission the stop button on the clutch switch may have broken apart, replace the stop button to fix the cruise control. You can get one at any Nissan Dealership.

Could be bad gauge or float stuck in fuel tank

Hey Jan==I imagine when you say floater, you mean the float on the arm for the fuel gauge. This is all part of the fuel gauge and you have to remove the tank, then remove the gauge and install a new one. I don't know why you would change it but make sure it is needed. GoodluckJoe

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