Honda Odyssey camshaft sensor is broken, whether to replace the assembly or split repair

If there is a problem with the camshaft position sensor, the assembly can only be replaced, and this kind of thing cannot be repaired.

Hello! It is recommended to change the assembly, I wish you a happy car! If my reply can help you, please help choose it, thank you very much!

The role and principle of the camshaft position sensor.

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Camshaft position sensor is a sensing device, also known as synchronous signal sensor, it is a cylinder discriminating positioning device, input camshaft position signal to ECU, is the main control signal of ignition control.

The Camshaft Position Sensor (CPS) is used to collect the camshaft motion angle signal and input it into the electronic control unit (ECU) to determine the ignition time and fuel injection time. Camshaft position sensor (CPS) is also known as cylinder identification sensor (CIS), in order to distinguish it from crankshaft position sensor (CPS), camshaft position sensor is generally represented by CIS. The function of the camshaft position sensor is to collect the position signal of the valve camshaft and input it into the ECU, so that the ECU can identify the top dead center of cylinder 1 compression, so as to carry out sequential fuel injection control, ignition time control and deflagration control.

In addition, the camshaft position signal is used to identify the first moment of ignition when the engine is started. Because the camshaft position sensor is able to identify which cylinder piston is about to reach the top dead center, it is called a cylinder recognition sensor.

The 02 Odyssey camshaft sensor is positioned at the front end of the camshaft cover against the front end of the intake and exhaust camshaft. With a body size of 4845 mm in length, 1802 mm in width, and 1697 mm in height, the Odyssey is an MPV owned by Honda.

A 2008 Guangzhou Honda Odyssey sedan with a mileage of about 10,000 km. Users reflect: the car can sometimes start smoothly, sometimes it is difficult to start, and occasionally there is a phenomenon of high coolant temperature. Troubleshooting:

Due to the difficulty of starting, the battery is first tested with a multimeter, and the voltage is, normal.

Check the power generation of the generator, when accelerating to 2500r min, the voltage displayed by the multimeter varies between, within the specified technical range, indicating that the generator is working normally.

Use HDS to read engine fault codes without any display.

Check the engine cooling system, the coolant level is normal, and the fan is working normally when the coolant temperature is high, and the cooling water pump and thermostat have been replaced during the engine 100,000km maintenance, and it was done a week ago, indicating that the cooling system is not faulty.

According to the maintenance experience, the high coolant temperature is often caused by the failure of the engine coolant temperature sensor, so after the engine coolant temperature sensor hall hail is replaced, the engine is slid and slid for road test, and the fault is still the same.

After a thorough close inspection, it was found that the crankshaft position sensor mounting bolts located on the engine block showed signs of loosening, and when they were removed, it was found that the crankshaft position sensor bolt holes had cracked.

After replacing the crankshaft position sensor, the engine was started and returned to normal. Summary: The sensor is not damaged, but the engine signal cannot be detected due to cracks in the installation position, resulting in engine failure.

When overhauling or installing parts, they should be tightened according to the specified torque, and not too much force, otherwise it will cause damage to the components.

Photo by Pacific Automobile Network Q&A).

Summary. In many cases, it is not the internal valve body that is damaged, but the stubborn dirt and impurities inside, especially in the internal valve body, the dirty impurities accumulate to form a blockage, resulting in the inability to effectively adjust the oil pressure, resulting in the occurrence of the problem of stagnation, impact and slippage. At the same time, the problem of high temperature of the gearbox cannot be ignored.

According to the Automatic Transmission Repair Association, "More than 90 percent of all faulty automatic transmissions are caused by overheating." ”

In many cases, it is not the internal valve body that is damaged, but the stubborn dirt and impurities inside, especially in the valve body, the dirty impurities accumulate to form a blockage, resulting in the inability to effectively adjust the oil pressure, resulting in the occurrence of the problem of stagnation impact slippage. At the same time, the problem of high temperature of the gearbox cannot be ignored. According to the data of the Automatic Bilian Transmission Repair Association:

More than 90% of all faulty automatic transmissions are caused by overheating. Ridge rush".

High temperatures can damage the quality and friction characteristics of automatic transmission fluids, increase friction and wear, and transmission noise will follow, as well as sludge (impurities or dirt) will also be generated inside the transmission (e.g. valve body), resulting in transmission setbacks and shocks. If the temperature exceeds 120 °C, the rubber sealing material will begin to harden, eventually leading to leakage and reduced hydraulic pressure. If the temperature is higher, the gearbox starts to slip, which in turn causes the temperature to rise even higher.

Audi and other high-end models will call the police and enter the transmission protection mode) If it is not solved in time, the transmission will be scrapped. Therefore, only by removing the stubborn dirt and impurities in the gearbox and effectively controlling the working temperature of the gearbox can the gearbox problem be completely solved and its recurrence can be prevented. This is also the key to realizing the dismantling and repair-free repair of the gearbox, so the key to the obstacle of the only front, the specific content of the base dismantling can be understood in detail!