1998 Ford Explorer Tell There Probem Battery Alternator Had Tested Which

1998 FORD EXPLORER
11,500 MILES
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how to tell if there is a probem with the battery or alternator. I had the battery tested which is the original battery. It was 100% charged. I just get a clicking sound when I tried to turn the ignition.
Dec 18, 2012 at 7:57 PM
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JDL
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Was the battery load tested? Use a digital multimeter across battery posts, everything off, what is the reading? With leads still hooked up, have helper turn key to crank. How far does the reading drop?

Dec 18, 2012 at 8:52 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Just to add, at the starter motor, automatic tranny, red wire is hot all the time. Yellow wire with lite blue tracer goes hot when the starter relay is energized. Any testing at the starter, make sure tranny is in park or neutral and the parking brake is set.

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Dec 18, 2012 at 9:00 PM
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