Crankshaft sensor failure

Crankshaft sensor failure can cause a range of issues that affect engine performance, as this sensor plays a crucial role in monitoring the position and speed of the crankshaft. Symptoms of a failing crankshaft sensor include difficulty starting the engine, intermittent stalling, rough idling, and a fluctuating or non-functional tachometer. In some cases, the check engine light will illuminate, and the engine may hesitate or misfire due to incorrect timing signals being sent to the ECU. A faulty crankshaft sensor can also lead to poor fuel efficiency, as the ECU may struggle to maintain the proper air-fuel ratio. In severe cases, the engine may fail to start entirely, as the ignition system relies on data from the sensor to fire the spark plugs at the correct time. Common causes of failure include wiring issues, sensor wear over time, or damage from excessive heat or oil contamination. Ignoring crankshaft sensor problems can lead to unpredictable engine behaviour, making the vehicle unsafe to drive. If any of these symptoms are present, a mechanic should diagnose and replace the sensor to restore proper engine function.

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