What are the symptoms of a bad crankshaft sensor?
2 Answers
The symptoms of a faulty crankshaft sensor include: 1. The malfunction indicator light illuminates. 2. The engine can continue to operate relying on the camshaft position sensor, but the starting time may be prolonged. Additionally, the cruise control and exhaust brake systems may not function properly, accompanied by engine shaking and white smoke emission, although there is no significant change in power performance and the throttle response remains normal. 3. Fault codes may be generated. 4. Abnormal signal disc. The crankshaft sensor plays a crucial role in the sensor system, determining the position of the crankshaft, detecting engine speed, and identifying signals such as the top dead center signals for each cylinder used in ignition control and the first cylinder's top dead center signal for sequential fuel injection control.
A faulty crankshaft sensor can cause numerous problems. I've personally experienced this - the most obvious symptom is the engine failing to start or having extreme difficulty starting. You might turn the key repeatedly with no response. While driving, the engine shakes violently with unstable idling that feels like dancing, and it may stall unexpectedly, especially at red lights or on slopes - incredibly frustrating. The dashboard warning light usually illuminates, creating anxiety. Fuel consumption inexplicably increases while power drops significantly with sluggish acceleration. Ignoring it may damage other components, leading to costlier repairs. My advice: immediately visit an auto repair shop for diagnosis and sensor replacement when noticing these signs - don't wait until stranded roadside. For prevention, always check dashboard warnings before driving and address any abnormalities promptly.
