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How long can you drive with a bad alternator bearing?

I just checked under the hood and realized my alternator bearing needs replacement. I really don’t have time to deal with this right now. How long can you drive with a bad alternator bearing?

avatar
Nick Kunze · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
You can drive with a bad alternator bearing for as long as your battery has charge. You run the risk of ending up with a
dead battery
, however.
An alternator bearing is a component turned by the alternator’s rotor to generate power. A broken bearing will compromise your ability to recharge your battery.
You’ll know you have issues with your alternator if you hear grinding or squeaking from under the hood. Another sign is if your electrical components have stopped working or are not working at total capacity.
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