 914-6 Gen light comes on when hooking up the battery. |
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| Porscheman912 |
 Aug 17 2011, 08:00 PM
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#1
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Newbie  Group: Members Posts: 20 Joined: 21-June 09 From: Washington Member No.: 10,492 Region Association: None  |
Ok, I have a friends 914-6 here, and just built the engine in it. Before doing the engine, and after, the Gen light comes on when the car is off. I took the starter, and Alt to a shop to have checked out, and they were both good. Replace the Volt reg with another new one I had, and still on. I have a wiring diagram, but does not show wire colors, or switches. The light would go out in 2nd position on the ignition switch, and then come back on. I dropped the fuse panel down, and now it is on in all positions. It goes out when started. I was getting a very light arc when I hooked the battery up, but when I unplug the alt plug from relay board it goes out. I am thinking it may be the ignition switch itself, and just wondering if anyone has seen this on these cars? It is an OEM 6, not a conversion. Any help would be great, I need to get the owner his car back, and I am still testing things, just trying to save time if someone else has seen this.
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| 914Mels |
Aug 18 2011, 03:19 PM
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#2
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Member Group: Members Posts: 357 Joined: 20-June 11 From: Santee Member No.: 13,221 Region Association: Southern California |
You may have a bad diode in the alternator. It's been years since I had a problem like this. If I remember correctly the car charged normal but the current backflowed through the diode and made the light come on. With the alternator unplugged, the light goes off, right?
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| underthetire |
Aug 18 2011, 03:56 PM
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#3
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
QUOTE(914Mels @ Aug 18 2011, 02:19 PM)  You may have a bad diode in the alternator. It's been years since I had a problem like this. If I remember correctly the car charged normal but the current backflowed through the diode and made the light come on. With the alternator unplugged, the light goes off, right? (IMG:style_emoticons/default/agree.gif) And the flaps shows the alt as good, since it will output voltage. |
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Posts in this topic
Porscheman912 914-6 Gen light comes on when hooking up the battery. Aug 17 2011, 08:00 PM
914Mels Does the charging system work? Aug 17 2011, 09:31 PM
Porscheman912
Does the charging system work?
Yes, it charges, ... Aug 17 2011, 10:02 PM Porscheman912 The car only has 32k on it, and is original, other... Aug 17 2011, 10:04 PM Porscheman912 Ok I have tested everything I can. Broke out my 9... Aug 18 2011, 01:17 PM Ericv1
You may have a bad diode in the alternator. It... Aug 18 2011, 04:31 PM Porscheman912 Yes, when I pull the three wire plug from the Alt ... Aug 18 2011, 03:55 PM Porscheman912 Ok, I think you are right about the diode. Now th... Aug 19 2011, 10:14 AM 914Mels Glad to help, I turned wrenches for 27 years befor... Aug 19 2011, 01:31 PM Porscheman912 Ok, I just wanted to update this since I am finall... Aug 26 2011, 11:58 PM |
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