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Registered
Join Date: Jan 2006
Location: Tuscaloosa, AL
Posts: 42
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Battery light
Just started my 86 911, noticed the batt. light stayed on, sometimes i have to rev to above idle to get it to kick off but this time did not. So checked to see how bright headlights are, no headlights. Everything else working fine. Any suggestions?
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11-29-2014, 10:48 AM
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RETIRED
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Put a meter on the battery terminals. Should be 13 ish not running, 13.5 running and 14 volts at 2500 rpms.
If not your alternator is going. As to the lights not working that could be a separate issue like fuses.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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11-29-2014, 11:28 AM
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Registered
Join Date: Jan 2006
Location: Tuscaloosa, AL
Posts: 42
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Ok, found the headlight problem, booth bulbs blown.(kind of a freak thing) havent figured out the batt. light yet. Seems like its charging ok.
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11-29-2014, 11:36 AM
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Member 911 Anonymous
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Call AAA to diagnos or take the battery to a FLAPS to check the condition of the battery.
Have you done any work that required neg side to be removed? check that too.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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11-29-2014, 11:36 AM
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RETIRED
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Were you having other weird symptoms? Like the tach swinging back and forth, radio getting loud.......you could have had a voltage spike from a bad regulator.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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11-29-2014, 11:53 AM
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Member 911 Anonymous
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+1, that could have caused the bulbs to blow, liken to a current surge
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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11-29-2014, 11:57 AM
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Registered
Join Date: Jan 2006
Location: Tuscaloosa, AL
Posts: 42
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None of the above, just checked the voltage at the battery, 12.8(not running), then started the car, dropped to 12.2
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11-29-2014, 12:04 PM
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RETIRED
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Did it come back up when revved?
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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11-29-2014, 12:06 PM
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Registered
Join Date: Jan 2006
Location: Tuscaloosa, AL
Posts: 42
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No it did not
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11-29-2014, 12:44 PM
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Wer bremst verliert
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,767
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You likely have a problem with your regulator or alternator itself.
John
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2007 911 Turbo - Not a toy 1985 911 Cab - Wife's toy 1982 911 3.2 Indiash Rot Track Supercharged track toy 1978 911 3.0 Lichtbau toy "Gretchen" 1971 911 Targa S backroad toy |
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11-29-2014, 01:31 PM
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Join Date: Jan 2002
Location: west michigan
Posts: 26,705
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sounds familiar....new alternator needed. If it's the original alt..it did good.
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78 SC Targa Black....gone 84 Carrera Targa White 98 Honda Prelude 22 Honda Civic SI |
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11-29-2014, 01:46 PM
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Registered
Join Date: Jan 2006
Location: Tuscaloosa, AL
Posts: 42
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Thank you guys. I think its time to replace the alternator.
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11-29-2014, 02:44 PM
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Da cab
Marble Grey
