There are many components in the design of the car, in the event of a breakdown of which the car will stoke, refusing to go further. All sorts of sensors and relays are to blame, especially on used cars. And the older the car, the greater the likelihood of a part failing. Therefore, when acquiring an already tired "iron horse", some of the electronic devices should be checked and replaced. Further in the review there are four sensors that it is desirable to change so as not to call a tow truck after a sudden breakdown.
1. Oxygen sensor
The first sensor, which must be checked without fail and replaced with a new one. What is he responsible for? Its readings correct the portions of the fuel-air mixture supplied to the engine cylinders. If it does not work correctly in the car, the fuel consumption increases, the speed rises, accelerates the wear of the elements of the fuel system, and in general, the operation of the power plant becomes extremely unstable.
2. Temperature sensor
Another sensor in a car that is strongly recommended to be replaced literally immediately after buying a car from the aftermarket. The temperature sensor is located in the cylinder head. It is necessary in order to transmit data on the coolant temperature to the electronic control unit (ECU).
The more mileage the car has, the higher the likelihood that the temperature sensor will start to "blunt" and transmit incorrect data. And this, in turn, affects an increase in fuel consumption, engine overheating, and a deterioration in the composition of exhaust gases. In winter, a faulty temperature sensor can cause the car to simply not start.
3. Throttle position sensor
In fact, this sensor is an ordinary resistor consisting of an increased sensitivity element and a stepper motor. It works simply - depending on the current position of the throttle valve, the indicator sends appropriate signals to the ECU regarding the calculation of the optimal fuel mixture.
If the sensor is faulty for some reason, then problems will certainly appear in the operation of the engine. They will show themselves most clearly at idle. The driver is guaranteed to encounter jumps and dips while driving.
4. ABS sensor
The last important sensor that deserves the utmost attention immediately after purchasing a used car. The ABS sensor can be checked using a conventional multimeter. Its readings will actively change if there is at least one break in the circuit. In this case, the sensor should definitely be replaced with a new one. In addition, the check can be carried out by spinning the wheel. In this condition, it is necessary to remove the voltage readings in the circuit. If it does not exceed 3 volts, then everything is in order. If the numbers are higher, the ABS sensor must be replaced.
If you want to know even more interesting things, then you should read about how to effortlessly make an old worn steering wheel look like thisas if he was just from the salon.