The battery keeps losing charge

1970 FORD F-100
144,000 MILES
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M A NOLLKAMPER
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  • 1 POST
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.
Oct 19, 2011 at 5:36 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
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
Oct 27, 2011 at 2:44 AM
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