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Registered
Join Date: Sep 2004
Location: Fort Collins, CO
Posts: 631
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SC electical problem
I accidently left the ignition on for a long time with the engine off, and now my '79 SC is dead.
I put a charger on the battery for a few hours (which, after reading the forums, I understand may have been a mistake) but still no power to anything with the exception of hazards and horn. I'm ready to get out the voltmeter  but thought I'd ask first if anyone else has had this problem after leaving ignition on.Thanks! |
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12-17-2004, 08:57 AM
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Registered
Join Date: Mar 2000
Location: Exeter, CA, USA
Posts: 165
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Check the battery voltage, should be between 11.75 and 12.25. Could be slightly lower if it still needs to be charged. How old is the battery and what amp rating did you use to charge the battery?
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12-17-2004, 09:30 AM
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Join Date: Oct 2001
Location: San Carlos, CA US
Posts: 5,522
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Car batteries do not like to be totally disharged like that. A few times and they actually die all together, then they don't hold charge anymore.
Get out your voltmeter, and measure the v during the crank.
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Porsche 2005 GT3, 2006 997S with bore-scoring Exotic: Ferrari F360F1 TDF, Ferrari 328 GTS Disposable Car: BMW 530xiT, 2008 Mini Cooper S Two-wheel art: Ducati 907IE, Ducati 851 |
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12-17-2004, 09:52 AM
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Join Date: Aug 2002
Location: Galivants Ferry, SC
Posts: 10,550
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also...standby voltage should be close to 12.6V.
At high-11's....it's practically dead. Wil
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Wil Ferch 85 Carrera ( gone, but not forgotten ) |
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12-17-2004, 11:05 AM
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Registered
Join Date: Sep 2004
Location: Fort Collins, CO
Posts: 631
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Thanks for your responses. After reading them, I checked the voltage on the battery....11.85. Noting happens when I turn the ignition, and I mean NOTHING. No click, no change on the voltmeter, nothing.
Just to be sure I pulled the battery out of another car (99 Tacoma) and put it in the Porsche...no change in results. I'm wondering if I "burned out" some part of the ignition circuit (coil, switch, etc.) by leaving it on so long?? Any more thoughts would be most appreciated.
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Sheena is a punk rocker Suzy Is A Headbanger Heidi Is A Headcase Judy Is A Punk The Ramones' earliest titles included 'I Don't Wanna Walk Around with You,' 'I Don't Wanna Go Down to the Basement,' and 'I Don't Wanna Get Involved with You.' Dee Dee later said, "We didn't write a positive song until 'Now I Wanna Sniff Some Glue'." |
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12-17-2004, 11:06 AM
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Registered
Join Date: Sep 2004
Location: Fort Collins, CO
Posts: 631
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Hey Everybody,
Thanks again. I found a little plug that had come lose under the dash by the ignition switch. All is good now. Thanks.
__________________
Sheena is a punk rocker Suzy Is A Headbanger Heidi Is A Headcase Judy Is A Punk The Ramones' earliest titles included 'I Don't Wanna Walk Around with You,' 'I Don't Wanna Go Down to the Basement,' and 'I Don't Wanna Get Involved with You.' Dee Dee later said, "We didn't write a positive song until 'Now I Wanna Sniff Some Glue'." |
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12-17-2004, 12:36 PM
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