What are the precursors of a bad crankshaft sensor?
1 Answers
Crankshaft position sensor damage, the car shows the signs of no high voltage, no fuel injection, unable to start the car. Of course, the most obvious phenomenon is the engine fault light on the dashboard. Because the crankshaft position sensor is damaged, the cranking angle of the crankshaft cannot be confirmed, and the engine computer does not receive the signal from the crankshaft position sensor, so to protect the engine, it will not ignite or inject fuel. There are three types of crankshaft position sensor damage: 1. Magnetic induction type: The fault of the magnetic induction crankshaft position sensor is that the engine cannot start. When checking the engine condition, it is found that the delayed ignition is the real reason why the engine cannot start. Solution: Reconnect the wiring, readjust the distributor, and check the ignition timing. 2. Hall effect type: The Hall effect crankshaft position sensor is used for sequential fuel injection, ignition timing, and knock control of the engine. When a fault occurs, the transmitted signal is not within the normal range. Solution: Check whether the permanent magnet, magnetic conductive plate, and integrated circuit are normal. 3. Photoelectric type: The fault of the photoelectric crankshaft sensor is poor engine acceleration, automatic flameout during starting, and sometimes high-voltage sparks. The reason is poor ignition system performance, resulting in weak high-voltage sparks. Solution: Check the low-voltage circuit, main relay, internal short circuit of the high-voltage ignition coil, engine control unit failure, and abnormal wear of some mechanical parts.
