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The initial appearance of the oxygen sensor is that the engine fault light is on (or occasionally flashing) in the instrument, but the car can barely drive for a short time; If it is not repaired for a long time, the computer (ECU) of the electronic fuel injection system will not be able to obtain the information of oxygen concentration in the exhaust pipe, so it will not be able to feedback and control the air-fuel ratio, which will increase the fuel consumption and exhaust pollution of the engine, and the engine will have unstable idling, lack of fire, surge and other fault phenomena. Therefore, it is necessary to troubleshoot or replace it in a timely manner. Generally, today's cars have two oxygen sensors at the front and rear, respectively in the front and rear of the three-way catalytic converter, and the faulty one should be replaced in time.
The failure of this product mostly occurs in the case of mixing gasoline (ethanol gasoline, etc.) with different grades and types of gasoline in different regions, or adding fuel treasure.
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Automobile oxygen sensor is a component to monitor the oxygen concentration of the engine exhaust system, once the failure, the computer of the electronic fuel injection system can not get the information of the oxygen concentration in the exhaust pipe, so that the air-fuel ratio can not be fed back control, which will increase the engine fuel consumption and exhaust pollution, and the engine will have unstable idling, lack of fire, surge and other fault phenomena.
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Hello, you are talking about the oxygen sensor, the oxygen sensor is one of the important sensors for the computer control of the engine to calculate the amount of fuel injection, it is damaged and will cause unstable idle speed and increased fuel consumption. Lack of engine power, sluggish acceleration, black smoke from the exhaust and so on. Thank you, hope it helps
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If the oxygen sensor of the car is broken, the engine will have unstable idling, lack of fire, surge and other faults. Therefore, it is necessary to troubleshoot or replace it in a timely manner. Once the sensor fails, the computer of the electronic fuel injection system will not be able to obtain the information of the oxygen concentration in the exhaust pipe, so it will not be able to feedback and control the air-fuel ratio, which will increase the fuel consumption of the engine and the exhaust pollution.
The sensor is the key feedback sensor in the EFI engine control system, and is the key part to control the exhaust emissions of the car, reduce the environmental pollution of the car, and improve the fuel combustion quality of the car engine.
A broken sensor behaves like this on the car:
1. The performance of the broken speed sensor: the speed sensing function is mainly to detect the speed of the electronically controlled car, and the control computer uses this input signal to control the engine idling, the torque lock of the automatic transmission, the automatic transmission shift, the opening and closing of the engine cooling fan and other functions such as cruise control;
2. Symptoms of broken speed sensor: engine instability when idling; When the vehicle starts or slows down and stops, there is an instantaneous pause or stallion; Reduced engine acceleration; There is a deviation in the speed display on the meter; The engine fault light is on;
3. The performance of the throttle position sensor is broken: if the throttle position sensor is out of tune, the correct ignition advance angle and the air-fuel ratio of the mixture cannot be guaranteed. The throttle position sensor should be accurately adjusted to the specified voltage reading, if the adjustment is too low, because the exhaust gas recirculation system does not provide enough exhaust gas in time, detonation will occur when accelerating, if the adjustment is too high, because the exhaust gas recirculation system reacts too fast, the exhaust gas provided is too much, so that the power is reduced;
4. The performance of the coolant temperature sensor is broken: if the coolant temperature sensor fails, the engine will have unstable idling, lack of fire, flameout or increased fuel consumption, etc., a multimeter should be used to detect the resistance value of the coolant sensor at various working temperatures according to the manufacturer's regulations.
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engine instability at idle; When the vehicle starts or slows down and stops, there is an instantaneous pause or stallion; Reduced engine acceleration; There is a deviation in the speed display on the meter; The engine fault light is on;
The vehicle speed sensing function is mainly to detect the speed of the electronically controlled car, and the control computer uses this input signal to control the engine idling, the torque lock of the automatic transmission, the automatic transmission shift, the opening and closing of the engine cooling fan, and other functions such as cruise control.
Considerations for automotive sensor detection.
In order to prevent sensor misjudgment that is not caused by the failure of the sensor itself, it is necessary to first conduct an external inspection of the suspected sensor part to check whether there is a short circuit, open circuit, dirt, disconnection, connection, blister, corrosion, oxidation, poor contact, sensor deformation, etc.
The external power supply should be checked first to check the external voltage, tie and harness conduction, so as to prevent the active sensor from not working properly due to the lack of power supply. For example, a Hall crankshaft position sensor would not have a signal output if it does not have a 12V or 5V voltage supply. If the power supply and tie-up are not normal, the wiring should be checked.
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1. Inlet pressure sensor
When the failure occurs, the engine intake pressure is abnormal, and the car computer cannot receive the correct signal, resulting in abnormal engine fuel injection, and the gasoline in the cylinder is not fully burned, resulting in black smoke and no power when accelerating.
2. Water temperature sensor
If there is a problem, when the car is working, it detects that the water temperature signal is abnormal, and the car computer will control the power output of the engine to protect the engine. When the engine fault indicator lights up on the instrument panel, the engine computer will limit the output of the engine.
3. Oil pressure sensor
If the oil pressure is insufficient, some high-end car computers will protect the engine, forcing it to stall. However, some cars do not have this function, and driving for a long time will definitely cause the engine to pull the cylinder.
4. Camshaft position sensor
This kind of sensor is difficult to start a normal car, the start time is long, although it can be started at the end, but in the process of starting, the engine backfires the phenomenon, the idle speed is unstable and the engine acceleration is weak, and the engine fault light on the instrument is also always on.
Key characteristics of the sensor
The static characteristics of a sensor refer to the correlation between the output and input of the sensor for the static input signal. Since the input and output quantities are time-independent, the relationship between them, i.e., the static properties of the sensor, can be obtained using an algebraic equation that does not contain time variables.
The characteristic curve is drawn by taking the input quantity as the abscissa and the corresponding output quantity as the ordinate. The main parameters that characterize the static characteristics of the sensor are: linearity, sensitivity, hysteresis, repeatability, drift, etc.
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If the vehicle speed sensor is broken, it will have the following effects on the car: 1. The engine fault light is on. 2. When the vehicle starts or slows down and stops, there is an instantaneous pause or flame-off.
3. The acceleration performance of the engine decreases. 4. There is a deviation in the speed display on the instrument. 5. It will cause instability when the engine is idling.
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If the sensor is broken, it will have an impact on the car, such as the tire is not enough to know about it.
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If the car sensor is broken, the impact on the car is as follows.
It may affect the balance of the car's wheel alignment, as well as the water temperature of the car.
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If the car sensor is broken, the impact on the car is that it cannot be started or the power is insufficient, and the transportation fee is applied.
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There are many sensors, and if they are broken, they should be replaced in time, otherwise there will be damage to the car. For example, if the water temperature sensor is broken, high or low water temperature will cause excessive wear and tear on the engine, and even damage the engine. If the fuel tank sensor is broken, you won't know exactly what the exact amount of fuel is.
All sensors have their role, and if they are broken, they will definitely affect the use of the car.
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If the car sensor is broken, if it is an oxygen sensor, it will lead to insufficient power of the car and the relative fuel consumption of the car.
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The car has a lot of sensors, and then the sensor you said is broken, which one is the sensor.
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If the car's oxygen sensor is broken, it will cause a great obstacle to the vehicle's driving in the future, and it will also add more gasoline and it is not easy to ignite.
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There will be a lot of sensors on a car, I don't know which one it refers to, some will not affect the driving, and some will.
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If the sensor is broken, first of all, if you observe from a distance, it must have a certain impact, in addition to this, other aspects also have an impact.
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If the car's sensor is broken, it will be very dangerous to drive on the road again. It is recommended that it should be repaired before opening.
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If the sensor is broken, your car is very problematic, this is very dangerous, you must buy it, you have to fix it.
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1. Once the wheel speed sensor is really damaged, it will not only cause a certain deviation in the speed display on the instrument, but also cause the idle instability of the generator and the decline of acceleration performance;
2. Secondly, when the vehicle starts or slows down and stops, it is easy to have an instantaneous pause, and even direct shutdown is possible, which directly affects the safety of driving to a certain extent;
3. In general, the impact of damage to the wheel speed sensor is relatively serious, so when the wheel speed sensor fails, it must need to be repaired or replaced in time. I hope my answer is helpful to you and I wish you a happy life. Thank you.
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It is true that a normal car does not affect the car.
However, in some models, there will be no high voltage after the Hall sensor is broken.
But the fuel injector can inject oil, such as; Audi V6 engine.
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The sensor is broken, affecting driving. The specific effects are as follows:
1. The engine fault light is on;
2. When the vehicle slows down and stops during the start or driving of the land key, there is an instantaneous pause or stallion;
3. The acceleration performance of the engine decreases;
4. There is a deviation in the speed display on the instrument.
5. It will cause the engine to idle unsteadily.
The sensor is the input device of the automotive computer system, which converts the information of various working conditions (such as vehicle speed, temperature of various rapid noise media, engine working conditions, etc.). ) is converted into an electrical signal and transmitted to a computer, so that the engine is in ideal working condition. There are many sensors used in vehicles.
When judging the fault of the sensor, it is necessary to consider not only the sensor itself, but also the entire circuit where the failure of the mu hood occurs.
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