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2 Battery issues
My 944 has sat around most of the time for the past five years. So most of the things i have found electrically is corrosion. But now i am down to a NEW battery just bought last week. I am having two issues. One is that i am worried that my alternator is not recharging. while sitting and running it is kicking 13.78v at the battery. If i turn everything on the voltage goes down to 13.30v. This seems low to me. Also while i was driving it during the day over the weekend the voltage gauge went below the 12v almost like it was only 10v.
The other problem is that i let the car sit for a few days and when i went out to start it, it was dead. I wondering if the battery drain is a bad starter? As anyone else seen this? |
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04-14-2010, 04:43 PM
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Mine will drain a new battery in 4-5 days if it just sits.
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04-14-2010, 07:49 PM
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Join Date: Mar 2004
Location: Las Vegas, NV
Posts: 317
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sounds like you have something grounding out somewhere in the car. if its one of the major ones its easy to find, just pull one fuse at a time using a voltmeter to find the culprit
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1983 944 Guards Red (87' Implant Complete) |
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04-14-2010, 07:54 PM
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voltage tonight
when i got home tonight i checked the battery and it had 11.48v on it.
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04-15-2010, 03:22 PM
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I would replace both the alternator and the battery at the same time, clean all of the ground connections to the chassis and drivetrain, and I agree with above in checking for ground shorts.
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04-15-2010, 03:42 PM
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found it
Well I found the short. It is the switch on the key lock for the rear hatch. Amazing that little switch drained the battery dry in two days.
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04-18-2010, 05:07 PM
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Coming up on your left...
Join Date: Nov 2006
Location: Albany, NY, USA
Posts: 695
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The rear hatch was also an issue for mine; not only was it draining the battery, it was setting off my (aftermarket) alarm at random times.
Figured it out, and fixed the problem. No more dead battery/angry neighbors.
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1986 Porsche 944 Turbo "S" clone  1998 Honda Accord  Siena College '08 Manager, Mavis Discount Tire 
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04-18-2010, 07:07 PM
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Join Date: Apr 2010
Location: Dallas, Tx
Posts: 382
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Quote:
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04-21-2010, 11:39 AM
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1974 Porsche 911
