Question about 1997 Geo Metro

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Help my 91 geo metro keep killing my battery and when i turn on the blinker it sounds like its shorting out. i un plunged the battery from the alternator wile running and it continued to run so i dont think that is the problem and i took it to get tested same with the battery

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  • cherrebrown2 May 14, 2009

    ok so to be more specific. i will be driving my car and i have the radio on. i will turn on my blinker and my radio will turn off for a second. then my lights become dimer. when i get to my destination i will turn my car off. and i will have no power. so i get it jumped. and it runs fine for a day or so then dose the same thing.( i am trying your test right now)

  • cherrebrown2 May 14, 2009

    no spark



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  • Geo Master
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A little more specifics please. Not a good idea to run alternator with cables disconnected. Why do you feel its shortin out? engine not running remove baterry positive post and check for a itty ***** spark when you touch cable clamp to its post. That will tell you if something is drawing power from your battery.Make sure your doors are closed and ignition is off. Good luck.

Posted on May 14, 2009

  • Ned C Cook
    Ned C Cook May 14, 2009

    Thank you, I can't think of anything on the vehicle that can kill your battery while driving if all is as should be in the charging department. Your radio is probably shutting off due to low voltage and the headlights dim for same reason. One more test and we should get it.

    With engine running turn on headlights. is they dim,see how long it takes to kill the engine. EVERYTHING ELSE OFF. hERE'S THE POINT, iF A BATTERY IS HOLDING A GOOD CHARGE, THE ALTERNATOR JUST COMPENSATES FOR ANY DEMANDS.

    The battery is the reservoir. . If the battery won't properly take and retain a charde(no guts) the alternator cannot take its place so it gets further and further behind on its job. Any electrical load, Like accessories(the lightest) to the headlights( heaviest at point of failure will pull what little your battery has in reserve. So, You dsid the battery was tested. Load testing is the only way to find the truth. The alternator may be damaged by a battery requiring a constant heavy charge. Still with me? If battery fails the lload test, replace it then chk alternator output with a voltmeter. Proper charging voltage shoul be between 13.6 v to 14.2 volts at the battery posts. See what that does for you. the alternator has a voltage regulator that controls alt. output. so if range is too high or too low change the alternator and you should be ok. chiefsm kragens, or checker parts stores losd test batteries and ck charging systems for free. Good Luck

  • Ned C Cook
    Ned C Cook May 14, 2009

    It's important that the battery be kept clean from acid accumulation on its top, very important. sprinkle baking soda on wet areas and rinse thoroughly. rins away fro engine and rinse what ever else gets we. like the fender.



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