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  Why Do Alternators Fail?

 

  by Khalid R. Mustaffa

 

 

When it comes to the car alternators, they have a reputation of being strong and rugged.  But they still break you may wonder.  Cars In Houston suggests you read on to find out more.

Primary reasons for alternator breakdowns

  • Excessive heat
  • Overwork
  • Overload
  • Jump starting someone else's car. 

Be very careful when jump starting a car. 

  • You may accidentally cross the jumper cables, which is not tolerable by the car alternator. 
  • If the car battery cables are disconnected while the car engine is running, the alternator won’t like it either, and may collapse.

Before deciding to taking the alternator to a service shop to test it, you may consider buying a voltmeter for fewer than five dollars

  • drive the car for a day or two while constantly monitoring the voltage reading.
  • So long the meter reads above 12 volts then the alternator is doing what it is supposed to do. 
  • Even if it drops during idle, its normal, just make sure that it is reading well above 12 when driving.

Cars in Houston would like to conclude by mentioning that alternators can also partially fail, where the converter of AC (alternating current) to DC (direct current) fails.  Cars In Houston said partially because each alternator has more than one converter or diode, and in case one fails the rest would still work, however the overall result may not be sufficient to keep the voltage efficient at idle and low speeds.

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