The battery keeps losing charge

Tiny
M A NOLLKAMPER
  • MEMBER
  • 1970 FORD F-100
  • 144,000 MILES
I have 1970 F-100 that the battery will not keep a charge and keeps going dead. I have replaced the battery so I know that is not the problem. Could it be the alternator. What should I check next.
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Thursday, October 20th, 2011 AT 12:36 AM

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Tiny
RASMATAZ
  • MEMBER
Use a voltmeter/DVOM read the battery voltage before you start the truck-now start it up read the battery voltage again -should be 13.5-15.5 volts if not shut it down and disconnect the voltage regulator and jumper A to F terminal start it back up again if the voltage is within 13.5-15.5 volts now-Replace the voltage regulator no increase replace the alternator
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Thursday, October 27th, 2011 AT 9:44 AM

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