An inoperative fuel gauge in the gas tank brings its share of discomfort to driving. Moving forward without knowing the remaining fuel is an occupation that cannot be called pleasant. If a service station is located along the route, then an auto electrician is visited there. Otherwise, the repairs are carried out independently.
It is necessary
- - screwdriver,
- - voltmeter.
Instructions
Step 1
I am always amazed by the fact that most motorists who do not give in to self-repair of the engine or transmission units experience incredible difficulties in the course of work with electrical equipment. In fact, the determination and elimination of the causes of these malfunctions is not particularly difficult.
Step 2
Let's first try to understand the principle of operation of electrical equipment designed to inform the driver about the volume of the current balance of gasoline in the tank. A device-indicator on the panel in the passenger compartment of the car allows the person sitting behind the wheel to visually monitor the presence of available fuel while driving or by turning the key in the ignition while standing still.
Step 3
The device is directly connected to the fuel, which is nothing more than an ordinary potentiometer (variable resistance). Moreover, the only point to which the voltage of this circuit is initially applied is the terminal of the indicator device.
Step 4
The current passing through the device enters the fuel level sensor, and the degree of deflection of the pointer arrow on the dashboard located in the passenger compartment under the steering wheel depends on the resistance arising during its passage.
Step 5
A malfunction of the fuel level sensor can be confidently asserted when, after turning the key in the ignition lock, the instrument arrow comes off the bottom edge and remains in the same position without further movement along the scale, regardless of the volume of gasoline in the tank.
Step 6
To confirm or remove the suspicions that have arisen, the fuel level sensor is removed from the gas tank and the float of the device is moved by hand (with the ignition on). These actions will help to accurately determine the technical condition of this electrical element.
