Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Recommended Posts

I have a charging problem with my Porsche 2000 996. If I charge battery the meter reads 14 volts for a while then goes to 10 volts and all kinds of lights go on. I had the battery tested good. Removed alternator and it tested good at Auto Zone. I checked wiring from alternator to battery ...tested good. Could it be that the test at Auto Zone was not accurate? Any ideas? Is there any fuses to the regulator that controls the alternator?

I took the alternator to an auto electric shop and they said the regulator and diodes were bad

...they are repairing it. So much for Auto Zone testing. Will keep you posted on final solution.

Solved the problem ...was the alternator after all. They replaced regulator and Diodes for $145 and we are back on the road. So much for Auto zone testing.

Edited by peaserl
Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

I have a charging problem with my Porsche 2000 996. If I charge battery the meter reads 14 volts for a while then goes to 10 volts and all kinds of lights go on. I had the battery tested good. Removed alternator and it tested good at Auto Zone. I checked wiring from alternator to battery ...tested good. Could it be that the test at Auto Zone was not accurate? Any ideas? Is there any fuses to the regulator that controls the alternator?

If, while engine running you are getting 13V+ at the battery terminals, then the problem is your battery. Get a new one for $50.

Link to post
Share on other sites
I have a charging problem with my Porsche 2000 996. If I charge battery the meter reads 14 volts for a while then goes to 10 volts and all kinds of lights go on. I had the battery tested good. Removed alternator and it tested good at Auto Zone. I checked wiring from alternator to battery ...tested good. Could it be that the test at Auto Zone was not accurate? Any ideas? Is there any fuses to the regulator that controls the alternator?

Grounds, grounds, grounds, depending on the weather where you are ground wires can become dirty causing issues with charging. Disconnect them clean the contact surface, and if you do not see an improvement get the battery. I put a Red Top in my car, it failed while parked in my garage while I was in Baghdad and now the shop I bought it from is closed. SO I put a Advance Auto Gold in there with warranty coverage, and I have not had 1 issue.

Link to post
Share on other sites

had the same problem with my previous car: battery fully charged and dropping quickly after a couple of days, replaced the battery and voila...

(battery was less than 3y old and was an oem)

considering the low cost of a battery, I would not hesitate: change it !

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.