What is the effect of a broken propeller shaft sensor

Also known as the speed sensor, there are electronic and mechanical transmissions, in the automatic transmission by the speed control of the basic shift timing, plays an important role, in the manual transmission of the car, in addition to displaying the speed of the cumulative mileage, at best, it is an auxiliary sensor, even if it is broken, it just can't display the speed, can not calculate the mileage, will not have a serious impact.

The propeller shaft sensor is generally called the vehicle speed sensor. Also known as odometer sensor. Therefore, after the driveshaft sensor is damaged, our odometer will not move, and the speed will not be displayed.

Driveshaft connects or assembles various accessories, and the parts of round objects that can be moved or rotated, are generally made of alloy steel pipes with light and good torsion resistance. For front-engine, rear-wheel drive cars, the rotation of the transmission is transmitted to the shaft of the final drive, which can be connected by several universal joints.

It is a rotating body with high speed and few supports, so its dynamic balance is crucial. Generally, the transmission shaft must be tested for dynamic balance before leaving the factory, and adjusted on the balancing machine.

The transmission shaft is an important part of the power transmission in the automobile drive train, and its role is to transmit the power of the engine to the wheels together with the gearbox and drive axle, so that the car can generate driving force.

Special vehicle drive shafts are mainly used in fuel tank trucks, fuel trucks, sprinkler trucks, sewage suction trucks, fecal suction trucks, fire trucks, high-pressure cleaning vehicles, road wreckers, aerial work vehicles, garbage trucks and other models.

If the crankshaft position sensor is damaged, the engine control unit cannot receive a reference signal at start-up, and the ignition coil does not generate high voltage. After opening the ignition switch for 2s, if the engine is not started, the engine control unit will cut off the control voltage of the fuel pump relay The crankshaft sensor is broken, which will not affect the start of the car, but it must be repaired, so that you can grasp his state The engine starts ignition at the end of the compression stroke, the engine computer calculates through the signal of the crankshaft position sensor and the camshaft position sensor, through the camshaft position sensor, the crankshaft position sensor is to sense the crankshaft speed to the signal computer version, Make the computer version control the high-voltage power of the fuel injector, if it is damaged, it will not ignite, and the detection with the computer detector will show the crankshaft sensing failure. The technical term for the ingots beam is called the subframe, which is installed on the girder by detaching it without damage. The replacement of the ingots beam can neither indicate that the vehicle has a major accident, nor can it mean that the vehicle has no major accident.

Further testing is required.

There is no idling, or the engine is seriously shaking in the idle state, the exhaust pipe makes a popping sound when refueling, and occasionally accompanied by the blasting sound when refueling and the fire is serious: the deviation is too large, it can not be started at all, and some models will hear the impact sound in the engine (the sound of the piston hitting the valve) when playing the motor, the crankshaft position sensor is to control the injection of fuel and ignition, if the damage and failure will affect the normal use of the vehicle, there are many failures such as poor ignition, insufficient fuel injection, and power decline.

The failure of the magnetoelectric inductive crankshaft position sensor was that the engine could not start, and when checking the engine condition, it was found that the ignition was too late as the real cause of the engine not starting. The failure of the photoelectric crankshaft sensor is the poor acceleration of the engine, the automatic stalling phenomenon when starting, and sometimes the high-voltage electric spark. The reason for the occurrence is that the ignition system is not working well, resulting in a weak high-pressure fire.

The engine computer does not receive the signal from the crankshaft position sensor for protection.

1. The fault lamp is lit; 2. The engine can rely on the camshaft position sensor to continue to work, but the starting time may be relatively long, and the cruise and exhaust braking systems cannot work normally. There will also be engine shaking and white smoke, but there is no obvious change in power performance, and the throttle response is normal; 3. Possible fault codes; 4. The signal disk is abnormal.

A faulty crankshaft position sensor can cause delayed starting, unstable rotation, and unbalanced steering.

The four common types of faults are: maximum fault, when the signal exceeds the upper limit of the normal range. Minimal failure, the signal exceeds the lower limit of the normal range.

Signal failure, no signal. Unreasonable fault, there is a signal, but the signal is unreasonable. The crankshaft position sensor is a very important sensor in the engine, and the most common sign of failure is that it will not start.

Hello dear! I'm happy to answer for you, and there are three main reasons for this to consider. The first aspect to consider is that the wiring of the sensor is in poor contact, so it is necessary to consider a thorough investigation of the wiring between the sensor and the computer.

The second aspect to consider is that there is a defect in the sensor or signal board, which can be considered to be replaced with a new Mengjing or sensor. The third aspect to consider is that there is a problem with the engine computer, or there is signal interference in the sensor, so this needs to be considered to check the engine computer version. Kiss!

I hope mine can help you In addition to another draft, you can also click on my avatar to follow me, so that if you have any questions in the future, you can click on my avatar to consult me! Thank you for your support! Looking forward to seeing you again!

Have a great day! <>

Summary. Hello, the symptoms of a broken car crankshaft sensor are: 1. The fault light is lit 2. The engine can rely on the camshaft position sensor to continue to work, but the starting time may be relatively long, and the cruise and exhaust braking systems can not work normally, and there will be engine shake and white smoke, but the power performance has not changed significantly, and the throttle responds normally.

Because the crankshaft sensor is broken, the rotation angle of the crankshaft will not be determined, and the engine computer will not receive the data of the crankshaft sensor.

Hello, the symptoms of a broken car crankshaft sensor are: 1. The fault light is lit 2. The engine can be stopped to rely on the camshaft position sensor to continue to work, but the starting time may be relatively long, and the cruise and exhaust braking systems can not work normally, and there will be engine shaking, white smoke, virtual but no obvious change in power performance, and the throttle response is normal. Because the crankshaft sensor is broken, the rotation angle of the crankshaft will not be determined, and the engine computer will not receive the data of the crankshaft sensor.

Reading the fault code with the decoder said that it was a failure of the crankshaft position sensor, but I changed the sensor and still couldn't hit the car.

Hello, use the decoder to read the fault code and say that it is the crankshaft position sensor failure, but if the sensor is replaced or the front reed can not hit the car, you can see whether the gasoline pump is injected, there is no high-pressure fire is the fault of the ignition hole before the ignition hole, if the ignition coil does not have a 12 volt voltage input, this is caused by the failure of the gasoline pump.

Answer: Hello, the crankshaft sensor is broken and has the following symptoms: 1. The fault light is on. 2. The engine can rely on the camshaft position sensor to continue to work, but the starting time may be relatively long, and the cruise and exhaust braking systems can not work normally, and there will be engine shaking and white smoke, but the power performance has not changed significantly, and the throttle response is normal.

3. Fault codes may be generated. 4. The signal disk is abnormal. , Introduction of crankshaft sensors:

1. The crankshaft sensor plays a key role in the sensor, which can determine the position of the crankshaft, detect the engine speed, and also detect the top dead center signal of each cylinder including the ignition control and the first cylinder top dead center signal for controlling sequential fuel injection. 2. The crankshaft sensor is usually used with the camshaft position sensor to determine the basic ignition time.

1: Slight (small deviation) There will be weakness of the car, and the uphill slope cannot be refueled.

2: No matter how serious it is, there is no idling, or the engine is shaking seriously in the idle state, and the exhaust pipe makes a popping sound when refueling! And occasionally accompanied by the sound of explosions, there is a refueling death! (Also includes 1).

3: The deviation is too large, it can't be started at all, and some models will hear the sound of impact in the engine when they hit the motor, which is the sound of the piston hitting the valve (advanced cars will not have such a situation).

There are many problems that will occur when the timing is out of order, all of which are damage to the nose, and if it is serious, you can be called to overhaul it once!

But you can rest assured, timing disorder such a situation does not happen, as long as you change the timing belt once a year, check the tensioner wheel during installation, and adjust the tension strength and timing mark installation as required, it will be fine.

The fault manifests itself as no high-voltage electricity, no fuel injection, and the engine fails to ignite, the most obvious of which is that the engine fault light on the dashboard lights up.

The function of the crankshaft position sensor is to determine the position of the crankshaft, i.e. the angle of rotation of the crankshaft. It is usually used in conjunction with a camshaft position sensor to determine the basic ignition moment. Both the time and position of the engine ignition require a signal from the crankshaft position sensor, as it detects the position at which the piston is running to the top dead center.

If the crankshaft sensor is damaged, the engine will not receive the crankshaft position signal and cannot determine which cylinder block should be ignited, and the vehicle will stop ignition and fuel injection in order to protect the engine.

How the crankshaft position sensor works:

There are three main types: magnetoelectric induction, Hall effect, and photoelectric. The three types work on the following principles:

1. Magnetoelectric induction:

The magnetoelectric inductive speed sensor and the crankshaft position sensor are installed in the distributor in two layers. The sensor consists of a permanent magnet induction detection coil and a rotor (timing rotor and speed rotor) that rotates with the distributor shaft. Timing rotor has.

One, two, or four teeth, etc., the speed rotor is 24 teeth. The permanent magnet induction detection coil is fixed on the distributor body. If the speed sensor signal and the crankshaft position sensor signal are known, as well as the working sequence of each cylinder, the crankshaft position of each cylinder can be known.

Rotor signal panels for magnetoelectric inductive speed sensors and crankshaft position sensors can also be mounted on crankshafts or camshafts.

2. Hall effect:

Hall-effect speed sensors and crankshaft position sensors are signal generators that utilize the Hall effect. The Hall signal generator is installed in the distributor, coaxial with the distributor head, and is fixed on the distributor panel by the encapsulated Hall chip and a permanent magnet. The number of notches on the trigger impeller is the same as the number of engine cylinders.

When the blade on the trigger impeller enters between the permanent magnet and the Hall element, the magnetic field of the Hall trigger is bypassed by the blade, and the Hall voltage is not generated, and the sensor has no output signal; When the notched part on the trigger impeller enters between the permanent magnet and the Hall element, the magnetic field lines enter the Hall element, the Hall voltage rises, and the sensor outputs a voltage signal.

3. Photoelectric type:

Photoelectric crankshaft position sensors are generally installed in distributors and consist of a signal generator and a signal disc with light holes. The signal panel rotates together with the distributor shaft photoelectric type, and there are 360 lithography gaps in the outer ring of the signal panel, which produces a signal with a crankshaft rotation angle of 1 °; Slightly inward, there are 6 orifices evenly spaced 60 ° apart, generating a signal of a 120° angle of rotation of the crankshaft, one of which is wider to generate a signal relative to the top dead center of the 1st cylinder. The signal generator is mounted on a distributor housing and consists of two light-emitting diodes, two photodiodes and a circuit.

The light-emitting diode is facing the photodiode. The signal disk is located between the light-emitting diode and the photodiode, and because there is a light hole on the signal disk, the phenomenon of alternating light transmission and shading occurs. When the beam of the light-emitting diode hits the photodiode, the photodiode generates a voltage; When the LED beam is blocked, the photodiode voltage is 0.

These voltage signals are amplified by the partial shaping of the circuit and are transmitted to the electronic control unit (ECU) at 1° and 120° crankshaft rotation angles, which calculates the engine speed and crankshaft position based on these signals.

Crankshaft position sensors are usually installed in distributors and are one of the most important sensors in control systems. Its functions are: detecting engine speed, so it is also called speed sensor; Detecting the position of the piston top dead center, so it is also called an top dead center sensor, which includes the detection of the top dead center signal of each cylinder used to control the ignition, and the top dead center signal of the first cylinder used to control the sequential fuel injection.

Summary. The driveshaft sensor is broken. If we talk about this ABS sensor, after this is broken, it means that this vehicle is controlled by this speedometer, and after this is broken, this speedometer cannot be displayed normally.

There will also be a failure of this ABS system, and there is also a case of stepping on the brakes, this wheel will be killed directly. That is, the vehicle may have this phenomenon of skidding or drifting.

The driveshaft sensor is broken. If you talk about this ABS sensor, after the buried shed is broken, it means that this vehicle is controlled by this speedometer, and after this is broken, this speedometer has no way to show the curve normally. There will also be a failure of this ABS system, and there is a case of stepping on the brakes, which will kill directly by taking a wheel.

That is, the vehicle may have this phenomenon of skidding or drifting.

There is an engine failure light on the dashboard, how many may it be broken?

There is a hidden number of faulty lights for the engine. There are more than a dozen possibilities. It may be that the oil of the gasoline is not good, it may be that the engine burns badly, or it may be that I found that there is a problem, and then there is a problem now, there may be a problem with the oxygen sensor, there may be a problem with the three-effect catalytic converter, there may be a problem with the air intake sensor, and it may be that there is a problem with the engine's control of the electric and friend's brain.

It is also possible that there is a problem with the engine's crankshaft position sensor. It is also possible that the timing control system of this engine can only be determined after a specific inspection caused by a problem.

The fault light on the instrument state is on, and the automatic transmission friend car is hung on the P gear, which is the parking gear, and then the gear can't be hung up.

Check this ABS sensor, but also this brake control switch, these two aspects. There is also a need to check the ABS pump.

How much does this repair cost?

After a specific inspection, it can be determined that it takes about 3,000 yuan to replace the ABS pump.

If it's a problem with the brake control switch and a sensor problem, how much does it cost to repair?

About three or five hundred dollars.