× Welcome to the 928 Owners Club Forum!

Tell us and our members who you are, what you like and why you became a member of this site.
We welcome all new members and hope to see you around a lot!

alternator low voltage while running

More
23 Oct 2019 10:16 #21030 by mavche
My 1983 928 just began to indicate a problem, which appears to be a low voltage reading (10-12 V) while the engine is running. What are the most likely reasons for this? I've never had a problem during the past 28 years.

Please Log in or Create an account to join the conversation.

More
27 Oct 2019 04:57 #21032 by nluk100
Could be a number of things.
1. Loose connection at alternator
2. Bad earthing of alternator
3. Alternator starting to fail due to age

Did you try pressing the corner of the instrument cluster where the gauge is as they circuit board is known to crack on some models.

'89 928 GT

Please Log in or Create an account to join the conversation.

Moderators: Rich928mm928billvvOC

Don't have an account yet? Register Now!