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Re: alternator problem Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Automotive Wiring and Electrical hashhead New User Apr 14, 2009, 12:03 PM Post #1 of 4 (1218 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 Veteran / Moderator Apr 14, 2009, 2:18 PM Post #2 of 4 (1213 views) Re: alternator problem Sign In hashhead; Hmmmm. Interesting name. 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 Veteran / Moderator Apr 14, 2009, 3:40 PM Post #3 of 4 (1201 views) Re: alternator problem Sign In [reply on other thread] with motor off, battery showing 12.45 volts Being way2old is why I need help from younger minds way2old Veteran / Moderator Apr 14, 2009, 3:41 PM Post #4 of 4 (1198 views) Re: alternator problem Sign In [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   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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