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Battery issue

  • 1986
  • 911 Carrera Targa
Mileage: 
125 000
Electrical and Electronic
Columbus, 
Ohio

I recently acquired a 1986 911 Targa.  I'm using my Porsche battery maintainer (980-611-981-00) but experiencing battery drain after only 2-3 days from the last time a drove the car.  I spoke with the seller and they claim not experiencing this issue.  Since purchasing the car two months ago, I replaced the passenger power window switch - it was operable but the switch stuck when pushed in the down position.  I've checked the door switches and trunk light after turning the ignition off.  And the power windows will only work until opening the door - when the circuit appears to properly cut power.  When I plug in the battery maintainer, the power windows operate with no keys in the ignition.  Is this normal or is this the basis of my issue?  The only other change made to the car was replacement of the [operating] aftermarket stereo unit with a new CD/tuner (nothing fancy or additional amps) by a reputable shop in town.  Is this the more likely culprit?

 

Thank you,

Todd V

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