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Re: alternator problem


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hashhead
New User

Apr 14, 2009, 12:03 PM

Post #1 of 4 (1122 views)
Re: alternator problem Sign In

Have a 95 Geo Prizm, headlights were draining battery while driving, car not would start this AM, sounds like starter was spinning, motor not cranking, starter re-replaced from Advance Auto last summer, is it bad Alt. ?


Loren Champlain Sr
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Apr 14, 2009, 2:18 PM

Post #2 of 4 (1117 views)
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hashhead; Hmmmm. Interesting name. Wink Draining battery? Starter spinning, but engine not cranking?
That sounds like two seperate problems. Have the charging system and the starter tested.
btw; It's always best to start a new thread with a new vehicle. Your messg. will be seen by a lot more people, that way.
Loren
SW Washington


way2old
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Apr 14, 2009, 3:40 PM

Post #3 of 4 (1105 views)
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[reply on other thread] with motor off, battery showing 12.45 volts



Being way2old is why I need help from younger minds


way2old
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Apr 14, 2009, 3:41 PM

Post #4 of 4 (1102 views)
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[last reply from Loren] hashhead; 12.45V is okay. A fully charged 12V battery will have 13.2V. But, at this point, all you are doing is showing surface voltage. If the battery holds a 200A load for 15 seconds and stays above 9.6V, the battery is okay. Once the engine is started, charging voltage should be between 13.6V and 14.6V. You'll need an amp guage to check for amperage output as well.
Loren
SW WA



Being way2old is why I need help from younger minds






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