Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

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)

08 Box Base Alternator

Recommended Posts

Did an Alternator test by attaching a multimeter to my terminals with engine running. It read about 12 volts then proceeded to go lower, at some point down to 10.5.

I assume the alternator is not charging the battery or there is a connection problem, possibly the ground. The batt is not holding a charge either. Thoughts? V

Link to comment
Share on other sites

  • Moderators
9 hours ago, vza said:

Ok.... so it could still be the battery even though I'm only getting 10 or so volts with the engine running across the terminals? V


Yes. A bad battery can act like a black hole for alternator output.  As Loren noted, get the battery load tested, if it is bad, replace it. If the alternator still has low output, it is probably the voltage regulator which can be swapped out as well.

Link to comment
Share on other sites

Ok...Battery tested good ...but ....it wasn't the correct battery for the car so I dropped in a new one. Measured voltage across terminals w/ engine running and got around 10.5 volts. I assume its the alternator or voltage regulator. Will check connections and ground. Any thoughts. Thanks V

Link to comment
Share on other sites

Managed to get my alternator out and I think I need more than Voltage Regulator. I noticed 2 wires burned up(pic of 1 of them) I guess these are wires to the Diodes. I did smell some electrical burning when test driving .....maybe the alt?  Would it be okay to use an alternate reman alternator ie.AC Delco. They are less expensive than the Bosch. Thanks V  


Link to comment
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.

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.