1992 BMW 325 altenator/ battery

1992 BMW 325
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KNIGHT21XOX
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Electrical problem
1992 BMW 325 6 cyl Wheel Drive Type unknown Automatic 151000 miles
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i have a 1992 325i and the altenator was bad so i changed it. i then charged my battery becuase i was dead as could be. after it was charged i put it on and it started right up. i decided to see if i was running off the battery and i pulld the positive wire off and the car shut off. what could be wrong?? or is that just what will happen??
Feb 20, 2008 at 10:03 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
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Try this read the battery with a voltmeter before you start it -it should be 12.4volts or better-if not battery is still weak. Next start the car up and read the voltage while engine running and headlights/heater On -it should be 13.2-15.5volts not in this zone the alternator is not putting out or the battery is not taking it.
Feb 20, 2008 at 10:25 PM
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