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1995 Ford Taurus

Question: goes dead

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aznels4, 3.0L V6, Tucson, AZ, December 08, 2010, 11:31

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new alt and battery , charge not getting thru to battery , had alt rechecked its good and battery is new and also good

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  DaveJHM December 08, 2010, 22:53
  

   Master

  Well, obviously something isn't quite right here! What is your alternator amperage (peak) and voltage (peak) output?

  When you say it goes dead, is it after the car sits a while, or right away? If it is after it sits, you could have a parasitic draw taking the battery down.

  Check your cable connections all the way around too, as they can have poor contact at times.
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  aznels4, December 09, 2010, 04:23
  

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  stays good over nite , and runs for awhile during the day .if you drive at nite it slowly gets weak lights start to dim a, until finally just shuts off and wont even turn over then
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  DaveJHM, December 09, 2010, 21:18
  

   Master

  You absolutely have an alternator or voltage regulator problem (which is internal to the alternator). There is nothing else that could allow the battery to lose charge and allow the vehicle to lose electrical power and die while driving. Like I mentioned, find out what your alternator peak amperage and voltage regulator peak voltage is. Should be measured at 2000 RPM.
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  Visitor, January 27, 2011, 08:35
  

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  my car only goes dead when i turn it off. the battery is good the lights come on, there is a noise that begins when i try to start car
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