Generator light on question
- Mark Pribanic
- 356 Fan
- Posts: 2416
- Joined: Sun Mar 09, 2008 9:11 pm
- Tag: Drive 'Em!
- Location: Neptune Beach, Florida USA
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Generator light on question
I just replaced the Voltage regulator and replaced the generator with one rebuilt and one new unit and the generator light is still on. What am I missing? Gotta be something simple.
Thank you in advance!
Thank you in advance!
Mark Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
- Vic Skirmants
- Registry Hall of Fame
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Re: Generator light on question
Did you polarize the generator?
- Mark Pribanic
- 356 Fan
- Posts: 2416
- Joined: Sun Mar 09, 2008 9:11 pm
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Re: Generator light on question
Nope, trying that now. Have never done that on the past. Connect the generator post DF to VR D+?
Mark Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
- Vic Skirmants
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Re: Generator light on question
Take off fan belt; D+ to 12V for a second. Generator should spin clockwise. Done.
- Mark Pribanic
- 356 Fan
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Re: Generator light on question
What do you mean to 12v. To the hot terminal of the battery?
Mark Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
- Vic Skirmants
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Re: Generator light on question
12V is available at the regulator.
- Mark Pribanic
- 356 Fan
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Re: Generator light on question
All I get is sparks
Mark Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
- Larry Coreth
- 356 Fan
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- Location: NE N.CAROLINA
Re: Generator light on question
Well Mark that would suggest you have an error somewhere, in the wiring or the either the new gen or reg. Suggest you look closely at the wiring diagram in the shop Then with Volt-Ohm meter in hand check the gen and reg.(disconnected ta D+& B+) for shorts.
Larry Coreth
Roanoake Rapids, NC
Roanoake Rapids, NC
- Greg Bryan
- 356 Fan
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Re: Generator light on question
From the current issue of the 356 Registry magazine!
If you wire your generator like the picture, it should motor - with the fan belt removed.
If not, something isn't right in the generator
If you wire your generator like the picture, it should motor - with the fan belt removed.
If not, something isn't right in the generator
Greg Bryan
- Mark Pribanic
- 356 Fan
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- Joined: Sun Mar 09, 2008 9:11 pm
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Re: Generator light on question
Thank you Vic, Larry & Greg! Greg, that illustration is perfect! I have the original Bosch and the 1st replacement with me at work. Going to take them to a alt/gen shop to test them. I will polarize the 2nd replacement this evening when I get home from werk! Will keep everyone posted what I find out.
Mark Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
-
- 356 Fan
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Re: Generator light on question
FWIW and I expect you've tried it, but are the brushes nicely formed to the commutator and making good contact. If they stick, you get sparks and a generator light. This is common to this new to Porsche person.
- Mark Pribanic
- 356 Fan
- Posts: 2416
- Joined: Sun Mar 09, 2008 9:11 pm
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Re: Generator light on question
K, Got it sorted! Here is my theory. Genny went bad & blew out the VR. When I got back to Florida from Cali I replaced the VR thinking that would solve the issue. Idiot light was blown out too. Replaced the Idiot light bulb, Genny light was burning bright. Replaced the genny with 3 rebuilt Bosch ones, but since the VR was replaced 3 weeks ago, thought it was a genny issue. Replaced my 3 week old VR with a new one and the Idiot light went out. Viola! Thank you all who helped!
Mark Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic
Registry# 13617
Florida Owners Group Trustee - 2008-2010
Neptune Beach, Florida USA
Instagram: Mark.Pribanic