What are the symptoms of a faulty camshaft position sensor?
2 Answers
Symptoms of a faulty camshaft position sensor include: 1. Difficulty in ignition, making the engine hard to start; 2. Trouble accelerating when the car is hot or even stalling directly; 3. Lack of power, inability to accelerate; 4. Constant shaking while driving. The camshaft position sensor is a sensing device, also known as a synchronization signal sensor. It serves as a cylinder identification and positioning device, sending camshaft position signals to the ECU, which is the main control signal for ignition. The function of the camshaft position sensor is to collect the position signal of the valve camshaft and input it to the ECU, allowing the ECU to identify the top dead center of cylinder 1 compression. This enables sequential fuel injection control, ignition timing control, and knock control.
My old American car had the same issue last week! In the morning, it took three or four turns of the key to start, and the engine wheezed like an old ox. While driving, it suddenly lost power during acceleration, and the engine light on the dashboard was glaring yellow. The scariest part was when it suddenly cut fuel on the highway, almost causing a rear-end collision. At the repair shop, they plugged in the diagnostic computer and found the camshaft sensor signal was cut off. The mechanic said this thing controls the ignition timing, and if it malfunctions, the fuel injectors spray randomly, not only causing fuel consumption to skyrocket but also risking damage to the catalytic converter. After replacing the new sensor, the throttle response became immediate and smooth.
