1991 Buick Regal Battery Keeps Dying

1991 BUICK REGAL
120,000 MILES • V8 • 2WD • AUTOMATIC
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SIEBFAM
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I have had two batteries installed this year. Alternator is producing fine, new cables, but I believe something shorting out battery to causing it to go dead in about two days time, if it's not driven. Any suggestions?
Jul 9, 2009 at 7:03 PM
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MHPAUTOS
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Hi there,

You need to do a current draw test, place an Amp meter between the battery pos & the cable, check with key out & doors closed, check current draw, if above about .2 amps start pulling fuses and check for which circuit is drawing, also disconnect the alternator as well as a faulty diode will cause this without affecting the charge rate to much, start here.

mark (mhpautos)
Jul 9, 2009 at 8:14 PM