Question about 1983 Chevrolet Silverado

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Gauge will not show fuel level no matter if the tank is empty or full please help

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Check the wires,the one to the sending unit and the ground wire from the unit,it might be a bad connection if you are lucky.

Posted on Aug 24, 2009

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YOU NEED A NEW FUEL SENDER UNIT

Posted on Jul 29, 2009

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I have Nissan patrol super safari mod.2005, problem with fuel gauge main tank showing maximum spare tank minimum please help


if you have 2 fuel gauges working of a tank switch there may be some resistance in the circuit of the second circuit that increases the reading of the gauge. Personally I have the tanks balanced out with a levelling hose between them the the gauge reads the capacity left in the tanks IE full-- both tanks-- full, 1/2 both tanks 1/2 With the way you have it set up then if one gauge is faulty and shows full when it is empty you can find yourself in a spot of bother when you need the other tank

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Fuel gage showing half a tank but trip computer only registering 60 miles left


Its very simple. If the gauge is showing half full then fill the tank and see how much fuel it takes. If the amount you add is approximately 50 percent of the fuel tank capacity then you know the fuel gauge is accurate . In that case the computer is giving an inaccurate reading and should be ignored. All you need is an accurate fuel gauge - it does not matter a row of beans what the computer says if the fuel gauge is reading correctly.

Dec 22, 2012 | Saab Cars & Trucks

2 Answers

2004 buick century gas gage not working


Most likely a defective fuel level sending unit, located inside the tank connected to fuel pump assembly. Theres a possibility that you have a ground issue. So check that first as its easier. If the grounds check out then you have a few options. 1. Pull the fuel pump assembly and clean off the fuel level sender(tons of tutorials online for this). This fixed my problem for 10 months until my pump went out. 2. Replace just the fuel level sender. 3. Replace the entire fuel pump assembly (which should include sender and fuel pressure sensor). And a couple notes. If you have around 100K or more miles then DEFINITELY change the entire assembly. It beats having to do all the work again in the near future. No matter what route you go be sure to replace the fuel pump tank gasket.

May 28, 2012 | 2004 Buick Century

1 Answer

Gas gauge malfunction


Most of the time it's the fuel level sender in the tank that is the problem. The sender wears a bit as the fuel level float moves up & down and the result is a gauge that may read properly in a couple of spots but may show that the tank is empty or full at other times no matter how much fuel is in the tank. A few of these senders are replaceable but many only come as a part of the fuel pump module. Generally if the sender is bad and the vehicle has close to 100k miles on it I suggest replacment of the pump at the same time even if the sender is sold by itself. I've found that OEM parts work best on these as you don't wan't to have to do this job twice. Good luck and hope this helps!

Jun 25, 2010 | 2004 Chevrolet Malibu

2 Answers

Fuel gauge stuck on full


pos lead is used to measure ground...that means that the power goes through the fuel level sending unit and the ground lowers the power out from the unit....I would replace the fuel level sending unit.

Jul 28, 2009 | 2000 Ford Mustang

1 Answer

When the gas tank is full the gas gauge shows as empty. When the gas tank is empty the gas gauge shows as full.


Well that tells me that someone installed the wrong fuel level sensor. Your going to have to drop the tank and pull the pump and float assymbly out. Then go to a parts store and get a sending unit that has the opposite resistance of that sending unit. Just wait until the tank is empty so its a lot lighter. You can call the parts store or go down and see if there is multiple sending units. The sending units work by resistance, when the tank is full the float moves up and turns a wheel in the sending unit, which either removes or increases the resistance causing the gauge to lower. The sending units either give full resistance at full or no resistance at full and then changes as the level goes down until it does the opposite at empty.

Jul 17, 2009 | 1999 Chevrolet Cavalier

1 Answer

Gas gauge reads full all the time


hello, it sounds like it has something to do with your fuel sending unit located inside your gas tank,on the sending unit it has a float arm that reads the fuel level, some times that float arm gets jammed and wont show your actual fuel level,to fix this with your gas tank at least half full use a rubber mallet or any other object that wont damage the tank and with your key in the start position with the car not running but reading your gages hit the gas tank not to hard but hard enough to lodge the float arm loose, if this is unsuccessful then it will probably be a bad fuel sender location sensor located on the actual fuel sender if that's the case you'll need a new fuel sender. good luck and please send me a update or any questions let me know.

Mar 24, 2009 | 1997 Pontiac Bonneville

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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