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How do you fix a car’s alternator?
My car’s alternator needs to be changed, but the price tag of getting it done by a mechanic is a little steep for me right now. I have some mechanical know-how and I’m pretty comfortable under the hood. How can I fix my car’s alternator?
Chloe Jenkins · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Changing a car’s alternator is not like changing a tire or adding wiper fluid. It will require some skill, knowledge, and familiarity with car mechanics. That said, if you feel comfortable making car repairs, you can change your alternator in just nine steps.
Before you begin, you’ll need the following tools to get the job done:
- A new alternator
- Belt tensioner
- Basic hand tools
- Voltmeter
- Replacement serpentine belt
- Rags
- Gloves
Once you have your tools:
- Disconnect the negative battery cable.
- Loosen the belt tensioner.
- Loosen and remove the serpentine belt.
- Remove the wiring harness or connectors.
- Loosen and remove the alternator.
- Install the new alternator, making sure it fits and aligns with the bolt holes.
- Put your replacement belt on.
- Make sure the tension on the belt is correct.
- Reconnect the negative battery cable.
This process should take about two hours if you’re working on your own but will vary depending on your mechanic capabilities and knowledge. Always be sure to take proper safety precautions when doing your own car repairs.
If this process seems too complicated, a mechanic is the best option. You can request a quote from a
repair shop
to determine what the cost will be. Should you need a mechanic, switching your car insurance with the
Jerry
app could save you hundreds of dollars on your premium and alleviate stress. Once you download Jerry, answer a handful of questions that will take you roughly 45 seconds to complete. You’ll immediately get car insurance quotes for coverage similar to your current plan. Jerry customers save an average of $879 a year without ever sacrificing great coverage or service.
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- Gregory R.
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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.
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