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Registered
Join Date: Jul 2006
Location: Nowhereville
Posts: 72
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unusual electrical problem
Tonight while driving my 80 SC an electrical problem occurred.Intermittently the seatbelt light would come on the tach would jump & the headlights would get very bright.I think it
burned out the high beams. Has anyone experienced this problem?
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76-911s 80-911sc Regards Lester |
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12-14-2006, 05:37 PM
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Registered
Join Date: Mar 2001
Location: Falls church Va
Posts: 725
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Check the voltage output from the alt. Might have a bad regulator or bad connector in the charging system.
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12-14-2006, 06:14 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,448
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bizerk voltage regulator.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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12-14-2006, 06:14 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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Failing Voltage regulator ... high Voltage spikes!
Check/monitor your system Voltage ... plan on getting a new Voltage regulator, soon!
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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12-14-2006, 06:14 PM
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Registered
Join Date: Jun 2005
Location: South of Nashville
Posts: 632
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Quote:
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Patton No Porsche at the moment but give me 6 months and then...... |
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12-15-2006, 04:52 AM
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Registered
Join Date: Jul 2006
Location: Nowhereville
Posts: 72
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After reading Jim Thorusen's troubleshooting guide on this site I removed the alternator and found the D+ connection to the voltage regulator loose.The regulator looks at D+ to determine excitation current in the alternator.If the regulator sees low or 0 voltage at D+ it increases excitation current which raises output voltage.Anyway I put the alternator back in and drove several test miles with no voltage spike problems.
Note;my alternator was a Valeo with internal regulator. Thanks for all the help!
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76-911s 80-911sc Regards Lester |
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01-20-2007, 04:59 PM
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