I REPLACED BATTERY AND ALTERNATOR AND BATTERY ...

  • Tiny
  • brandon_carollo
  • 2000 Cadillac DTS
  • 134,000 miles

I replaced battery and alternator and battery still loses voltage while driving car could it be a bad crank sensor? What could cause the draining battery please help, what is next?

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Saturday, November 5th, 2011 AT 1:05 AM

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  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

You need to check if the voltage from the alt is getting to the battery. Check that first using a volt meter. With the engine off, the battery will produce around 12 volts. When you start it, you should see 14+v at the battery. If you don't check the fuseable link between the battery and alt. If it is bad, it won't charge the battery.

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Saturday, November 5th, 2011 AT 2:16 AM

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