Fuel gauge stopped working

The fuel gauge has stopped working. I keep running out of gas because of this. I tried to fix it by replacing the sending unit in the tank. The unit has prongs on the top and the bottom, as well as two on the back. I was wondering whether there are any wires that connect to the prongs on the back of the unit. How can this be fixed?
Experienced mechanics share their insights in answering this question :
Hello there, thanks for writing in. A faulty sending unit can be problematic for your 1972 Pontiac Grand LeMans. When the fuel gauge is not functional, there are 3 suspected components: the sending unit, wiring for the gauge and sending unit, and the fuel gauge itself. To answer you question, there should be wires running to the fuel sending unit, otherwise it would be unable to get the signal to the fuel gauge. If the wires are intact and the sending unit was replaced, then there is a problem with either the wiring or the fuel gauge itself. If you’d like some help, consider having one of our certified automotive technicians assist you with a fuel gauge sender repair.

How to Identify and Fix Common car Problems ?

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Sending Unit Failure is the most-common cause of a gas gauge not working. When the vehicle is in motion, the sending unit is in constant motion, constantly rubbing the variable resistor. Over time, the contacts can wear, leading to an open circuit.
Particularly if you are experiencing an issue with more than one gauge on your vehicle, the culprit may be a fuse. If the fuse for the instrument panel has been blown, make sure to replace it. Then go ahead and turn on the car. If the fuel gauge doesn`t sort itself out automatically, run the cluster test again.
Press and hold the “Trip/Odo” button and turn the car back on. While you`re holding the button, turn the key back to the “ON” position. Hold the button down for another 2 seconds after the car`s back on, then release.
A fuel level sensor (FLS) is used in all automobiles to indicate fuel level. Various methods are used to measure fuel level such as resistive film, discrete resistors, capacitive, and ultrasonic. Resistive-based sensors are most commonly used for this application.
The fuse box is usually located under the dashboard on the driver`s side, in the engine compartment, or in the trunk. Fuses may be labeled using abbreviations or numbers. Look for labels such as “FUEL,” “GAUGE,” or a specific number that corresponds to the fuel gauge.
The instrument cluster fuse, also known as the dashboard fuse, powers the gauges and displays on your vehicle`s dashboard. This includes the speedometer, tachometer, fuel gauge, and temperature gauge. If this fuse is damaged or blown, it can cause these gauges to stop working or malfunction.
Blown fuses can definitely be a cause of a gas gauge not reading properly and can be worth looking into as it is one of the easiest and cheapest repairs to make regarding this problem.
The fuel gauge should be receiving 12 volts. If not, check all wires for any signs of damage, as a corroded wire or loose connection could be the issue.
12 AWG stranded silver plated copper wire, with chemical resistant PTFE insulation. Temperature rated for -65°F to 390°F. Highly chemical resistant for use inside fuel tank. Ideal for inside fuel tank usage to power fuel pumps.
Without a properly charged battery, the fuel injectors may not add fuel to the cylinders as efficiently as they normally would. This has the potential to cause more loss of fuel mileage than the alternator simply running all of the time. You may notice the engine lurching or the car seeming to run a little rough.
Without a properly charged battery, the fuel injectors may not add fuel to the cylinders as efficiently as they normally would. This has the potential to cause more loss of fuel mileage than the alternator simply running all of the time. You may notice the engine lurching or the car seeming to run a little rough.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Temperature gauge does not work – 1998 Mercury Grand Marquis
ANSWER : You will need to test the computer to scan for data of the temperature sensor to see if the computer is reading the correct temperature as tested externally on the coolant sensor. If the sensor is not accurate then replace the sender. If the sender is accurate then you will need to have the temperature gauge replaced.

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I have a 1981 e-350 with dual fuel tanks the p.o. added a third tank and 3 electric fuel pumps along with sepparate gauges and swi
ANSWER : The switch you are referring to is vended with the required electrical and fuel schematic (I just looked in the box) that answers your installation question. If you want an advance view, here is a link as well. Yes, you need a return line and just refer to the aforementioned link. If you are retrofitting back to OEM, I strongly encourage you to buy the original Factory Service Manual (FSM). There are lots of details attending this system and obviously it is difficult to recount it all here. The FSM will make your life much easier and you can then make sure your installation is perfect. Alternatively, YourMechanic can dispatch a certified mechanic and perform the whole retrofit and check out if you desire. Just request and schedule a generic service such as fuel pump service and the mechanic will come to your location and estimate the parts and labor required. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Read Full Q/A … : Fuel gauge stopped working

Windshield wipers stopped working. They’ll suddenly stop working then suddenly start working again. Has been happening for a week.
ANSWER : The problem you are describing likely stems from an intermittent electrical fault in the wiper circuit. The windshield wiper system uses a small electric motor to move the wiper arms that you see on the windshield. That electric motor is controlled through a switch, relay, fuse, and wiring. One, or more, of those electrical components has failed although it is also possible that the mechanical arms are binding (seized, if the lubricant has dried out) thus causing the electric circuit to the motor to overload. Regardless of the underlying fault, if you request a non functioning wiper diagnostic/repair, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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My speedometer, rpm gauge and fuel gauge are not working; possible gear slipping and high rpm.
ANSWER : Hi there. For the electrical issues on the dash that are not working properly, I recommend that you have your battery check and loaded. The battery could have 12.6 volts, but if a cell is burnt or damaged, the battery will not hold a load causing issues with the electrical system to your vehicle. If the battery is low on charge and or fails the load test, then I recommend replacing the battery with a new one if it is more than a year old. Batteries in a vehicle usually last about 2 to 3 years without having any issues. If you need further assistance with your gauges not working properly, then seek out a professional, such as one from Your Mechanic, to help you.

For the jerking feeling when shifting, check the transmission fluid and see if it’s full and red in color. If the fluids are low, top them off and check the condition of the shifting issue. Another possibility that can cause the transmission to jerk into gear is the transmission or engine mount could be loose or damaged. If the transmission is still having an issue with shifting, then I recommend seeking out a professional, such as one from Your Mechanic, to help you with your transmission jerking in gear.

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Fuel gauge stopped working – 1972 Pontiac Grand LeMans
ANSWER : Hello there, thanks for writing in. A faulty sending unit can be problematic for your 1972 Pontiac Grand LeMans. When the fuel gauge is not functional, there are 3 suspected components: the sending unit, wiring for the gauge and sending unit, and the fuel gauge itself. To answer you question, there should be wires running to the fuel sending unit, otherwise it would be unable to get the signal to the fuel gauge. If the wires are intact and the sending unit was replaced, then there is a problem with either the wiring or the fuel gauge itself. If you’d like some help, consider having one of our certified automotive technicians assist you with a fuel gauge sender repair.

Read Full Q/A … : Fuel gauge stopped working

Gas gauge isn’t working. Sometimes the speedometer and the temperature gauge doesn’t work. Limited lights around gauges and radio.
ANSWER : Hi there. The dashboard lights are burned out in the dash and the dimmer switch could be worn causing the lights to be weak. The gauges that seldom fail to work is most likely a loose wire in the dash panel. The fuel gauge that is not going to E when shutting off the car has a damaged rheostat within the sending unit. The sending unit is in the fuel tank attached to the fuel pump. If you need further assistance with your gauges not working, then seek out a professional, such as one from Your Mechanic, to help you.

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Replaced fuel pump. Car won’t start. 2002 Infinity I35
ANSWER : Hi there – the metal component you describe is a fuel check valve on the fuel return line. Its function is to maintain a small amount of pressure in the fuel system so that starting does not require the fuel pump to run very long before the engine will start. Having replaced the fuel pump and fuel filter, I would check fuel pressure while the car is running. This is to check the fuel pump relay for burned contacts that won’t support full electrical current to the pump, and for proper fuel pressure – a malfunctioning fuel pressure regulator could also restrict power and higher speeds if pressure is too low. I would recommend an inspection of the fuel system by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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My 2010 kia blower fan stopped working but was fine last week. This occurred a few times in past. Works fine then stops blowing ag
ANSWER : The blower switch and the plug connection on the back of the switch, as well as a faulty blower motor are likely, too. I would check the blower motor first as you can easily power the motor directly to see if it runs. If the circuit includes a blower motor resistor block, of course be sure to check if the resistor block has continuity (specified resistance in ohms) at each position. If the blower motor runs, I would check the switch as occasionally there will be a bad connection at the switch that eventually causes the blower not to work. The relay is easy to test and if it works consistently as commanded, you can assume there is no intermittent fault. Obviously, check the fuse in the circuit, too, but if the fuse is bad, that means there is a problem in the circuit that will have to be repaired. Fuses blow due to electrical faults (e,g., short circuits). If you desire, a certified mechanic from YourMechanic can diagnose the problem you are having in an electrical component diagnostic.

Read Full Q/A … : Fuel gauge stopped working