Wire a fuel gauge by first disconnecting the old dysfunctional unit to replace it with a new one. Obtain 12-volt power from the fuse box using a standard wire, and connect it to the positive terminal of the fuel gauge. Next, connect a wire from the float on the fuel tank to the negative terminal of the fuel gauge.Continue Reading
When wiring a fuel gauge, it is wise to have a full tank in order to monitor the installation correctly. Next, gather all the necessary tools and equipment together. Be careful not to use power tools around the fuel tank, as it can lead to combustion or explosion.
The float is usually made of fiberglass and connected to a resistor. If wired wrongly, there will be some inaccuracies on the fuel gauge reading as compared to the actual volume of fuel in the car’s tank. For example, the needle on the gauge may remain in the "full" position even after travelling a considerably long distance. On the other hand, the needle may remain on the "empty" position even after the car has been fueled with a considerable volume. The shape of the fuel tank can also cause these errors, as they may be shapelessly designed to fit in the frame of the car.Learn more about Car Parts & Maintenance
To reset the oil change light on a car, turn the vehicle's ignition on, and press the Reset stick or button usually located on the dashboard, under the hood or close to the fuel gauge or speedometer. Then, switch off the car's ignition, restart the engine and check if the light is re-lit. If yes, repeat the process. Alternatively, call a mechanic or the car's manufacturer.Full Answer >
To test a vehicle's fuel pressure regulators, connect the fuel pressure gauge to the fuel rail and start the engine with the vacuum line detached, and then attach the vacuum line and observe the drop in pressure on the gauge. If the fuel pressure drops around 5 lbs. per square inch, then the pressure regulators are working.Full Answer >
There are two main parts to a fuel gauge: the sender and the gauge. The sender is a float that is in the car's gas tank. The sender tells the gauge how much fuel is left in the tank, and this information is displayed on the dash of the car.Full Answer >
One reason a fuel injector doesn't work is faulty fuel pressure; to check this, attach a gauge, and take several readings. Readings to take include static fuel pressure, residual fuel pressure and running fuel pressure.Full Answer >