 Maybe an alternator problem? |
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| 57lincolnman |
 Feb 1 2017, 12:43 AM
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#1
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Member  Group: Members Posts: 174 Joined: 14-September 10 From: Los Angeles Member No.: 12,175 Region Association: Southern California  |
Several years ago I replaced my standard headlamp bulbs with 100w bulbs. It seems that whenever I drive the car with the headlights on and come to a stop my voltage gauge goes well into discharge territory. Once I get moving the gauge returns to the charging side. This is really a problem in stop and go traffic with the headlights on. The alternator is a rebuilt Bosch unit standard for 914 and was replaced about 5 years ago. I'm thinking of replacing the headlamps with an HID set-up to reduce the load. Is this an alternator problem? If I run the fog lamps or put on the turn signal while stopping, the system discharges. Thoughts are welcome.
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| dcheek |
Feb 1 2017, 06:25 AM
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Senior Member Group: Members Posts: 691 Joined: 30-May 06 From: Westfield, New Jersey Member No.: 6,103 |
Try replacing the voltage regulator.
Dave |
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| McLovin |
Feb 1 2017, 09:04 AM
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Member Group: Members Posts: 102 Joined: 31-August 16 From: Tallahassee, FL Member No.: 20,360 Region Association: South East States |
QUOTE(dcheek @ Feb 1 2017, 07:25 AM)  Try replacing the voltage regulator. Dave If it's like VW's, some voltage regulators are adjustable. I just did that operation on a beetle. |
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| 76-914 |
Feb 1 2017, 09:43 AM
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,501 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California 
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If it's mounted in the console that is totally normal. Check the voltage w/ a VOM directly on the battery posts to verify. It should at least throw a charge above 1500rpm. (IMG:style_emoticons/default/beerchug.gif)
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| malcolm2 |
Feb 1 2017, 09:45 AM
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#5
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States
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alternator belt tension?
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| southernmost914 |
Feb 1 2017, 11:05 AM
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#6
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KEY WEST/HAVANA Tunnel Authority Group: Members Posts: 338 Joined: 16-October 07 From: Key West/ St. Augie, Fl USA Member No.: 8,234 Region Association: South East States
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Your voltage gauge in you center console is fed through the brake circuit and voltage will show a drop when ever brakes are applied. Not a great design and you can change the voltmeters source. At least it lets you know the brake lights are working. (IMG:style_emoticons/default/smile.gif)
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| Mikey914 |
Feb 1 2017, 11:16 AM
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#7
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The rubber man Group: Members Posts: 12,661 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None
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Always check your ground strap. It's the easiest solution and hopefully it's it.
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