Engine Vibration The most common symptoms of a bad crankshaft pulley are engine vibration and irregular engine idle. It may also result in a damaged alternator, power steering pump, or a failed transmission if you are unlucky.
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Irregular Engine Idle Irregular engine RPMs are common with a bad crankshaft pulley because the dampener is put under more pressure, especially while idling. You might notice that the engine RPMs fluctuate all over the place.
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Dead Alternator While the alternator charges the battery and runs accessories, the crankshaft pulley is responsible for supplying power to this component. If the crankshaft pulley fails, the alternator no longer turns and produces power.
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Failure of Power Steering Pump The car’s power steering pump is also powered up by crankshaft pulley. It pumps hydraulic fluid into the system so your steering works the way it should. When the power steering fails, maybe its crankshaft pulley.
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