 Yet another alternator question |
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| ThePaintedMan |
 Jul 11 2018, 08:36 AM
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Advanced Member  Group: Members Posts: 3,885 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States 
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Sorry for asking one that I'm sure has been answered before. Searched but couldn't find a thread that sounded quite like my issue. Getting ready for a track day next week, and of course having charging issues. Typically I see the alt light come on with ignition on, but it shuts off as soon as I start the car. Occasionally it does come on when I turn the ignition on, but the next time it doesn't. Now, it doesn't come on when the ignition is on or when it's running. I suspect it isn't charging regardless because I see 12.2 volts with the car off and about the same while it's running. The car has been sitting but it was charging prior to this and it was covered with one of Perry's excellent covers. I wonder if the brushes are bad, but I think it sounds more like a bad relay board.
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| dr914@autoatlanta.com |
Jul 11 2018, 02:33 PM
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914 Guru Group: Members Posts: 7,810 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
relay boards do not go bad that often, and have not had one affect the charging system, I would substitute the voltage regulator second after making sure the belt is tight. Also make sure that the battery neg cable is cleanly attached to the right firewall and battery terminal. 914 alternators do not fail that often. Even if the bulb on the dash is bad it will not prevent the alternator from charging.
QUOTE(ThePaintedMan @ Jul 11 2018, 07:36 AM)  Sorry for asking one that I'm sure has been answered before. Searched but couldn't find a thread that sounded quite like my issue. Getting ready for a track day next week, and of course having charging issues. Typically I see the alt light come on with ignition on, but it shuts off as soon as I start the car. Occasionally it does come on when I turn the ignition on, but the next time it doesn't. Now, it doesn't come on when the ignition is on or when it's running. I suspect it isn't charging regardless because I see 12.2 volts with the car off and about the same while it's running. The car has been sitting but it was charging prior to this and it was covered with one of Perry's excellent covers. I wonder if the brushes are bad, but I think it sounds more like a bad relay board. |
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Posts in this topic
ThePaintedMan Yet another alternator question Jul 11 2018, 08:36 AM
The Cabinetmaker Alternators don't have brushes. Check the bulb... Jul 11 2018, 10:37 AM
worn
Alternators don't have brushes. Check the bul... Jul 11 2018, 06:18 PM porschetub
Alternators don't have brushes. Check the bu... Jul 11 2018, 11:55 PM worn
relay boards do not go bad that often, and have n... Jul 11 2018, 06:16 PM Edward Blume I had my alternator fully rebuilt and it turned ou... Jul 11 2018, 05:29 PM Dave_Darling If the regulator is unplugged, I know the alternat... Jul 11 2018, 11:20 PM Spoke Below is the schematic of the alternator/battery/V... Jul 12 2018, 05:00 AM ThePaintedMan Thanks guys! Man, when Spoke starts commenting... Jul 12 2018, 06:03 AM Elliot Cannon Wow! What an informative thread. So far I ha... Jul 12 2018, 02:36 PM ThePaintedMan After cleaning every bulb and connection in the ga... Jul 12 2018, 08:43 PM |
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