Occasionally, the car is difficult to start, and there is no jitter after starting, which is related to that sensor.

The fault of automobile camshaft sensor is not only related to the unstable idle speed jitter during cold start.

Moreover, it should be not only that the idle speed of the cold car is unstable, but also that the idle speed is unstable and jitter will occur during driving.

The camshaft controls the opening and closing of the intake and exhaust valves.

Vehicles equipped with camshaft sensors should use CVT (Variable Valve Timing) technology (different manufacturers may have different English codes). The information such as the rotation angle of the camshaft can be obtained by the sensor, and then the working condition of the vehicle can be judged by combining the information of other sensors to determine the ignition advance angle and other angles. The valve can be opened or closed in advance/delay by the actuator, thus improving the efficiency of the engine.

If there is something wrong with the camshaft sensor, it will affect the judgment of ECU, cause the actuator to perform the wrong action at the wrong time, inevitably affect the engine performance, and even cause problems such as knocking. The specific performance is vehicle jitter, which will appear at start-up and normal work, and should be repaired in time.