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1997 Ford Explorer charging system

Tiny
TERRYCJOHNSON
  • MEMBER
  • 1997 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 15,000 MILES
Wouldn't charge. Installed new battery and alternator and still will not charge.
Monday, November 30th, 2009 AT 8:16 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go to this link: https://www.2carpros.com/how_to/how_to_test_alternator.htm
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Tuesday, December 1st, 2009 AT 7:40 AM
Tiny
RICKMAR
  • MECHANIC
  • 170 POSTS
Have you checked your voltage regulator?
Check the battery voltage before and after starting the engine to determine if the battery voltage increases. Refer to the Normal Charging System Voltages chart.

Normal Charging System Voltages
Terminal "A" "S" "I" "Alt B+" "Batt"
"Eng to bat grnd"

Key OFF (12V) (0V) (0V) (12V) (12V)
0V
Key On - Engine Off (12V) (0V) (1-3V) (12V)
(12V) (0V)
Engine Running (12V- 15V) (6-8V) (12V- 15V) (12V-15V) (12V- 15V) (0V)

If you have an "Advance Auto Parts" near your location they will check your Alt. - Battery - Regulator and let you know what's going on.
Good Luck;
Rick
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Tuesday, December 1st, 2009 AT 8:15 AM

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