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 2004 996 GT3 with 63K miles. There are no modifications other than a cat back exhaust.

This morning the check engine light came on at start up. Everything seemed fine; however, the tach wasn't working and the high temp light and low gas light were on.

I have a generic OBDII code reader which I will use when I take the car home at lunch.

I'm guessing this isn't the first car to have this issue and was hoping someone could shed some light on this issue which seems pretty specific with the tach and lights on but this is my first check engine light in owning the car for a year now.

Thank you, Gary

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

  • Moderators

Just ran my generic OBDII scanner and it wouldn't pull any codes. Wondering if that means its a Porsche specific code?

Good times...

Possibly, best to get it scanned on a Porsche specific system (PIWIS or Durametric).

Link to post
Share on other sites
  • Moderators

The dash also indicates "Failure indicator" with a picture of an engine in front of it at start up.

Guess, I will be buying a Durametric today...

Either that or find a local Indy that has one.....................

Link to post
Share on other sites

Took a guess on a voltage problem. The battery was only 12.2V so I had it charged and tested. The car seems fine now but I know the car didn't fix itself.

Are the alternators a common issue on these cars? I drove the car but the battery voltage is dropping ever so slightly each time.

What is the correct alternator part number for a 2004? I think it is 99760301206

Link to post
Share on other sites
  • Moderators

Took a guess on a voltage problem. The battery was only 12.2V so I had it charged and tested. The car seems fine now but I know the car didn't fix itself.

Are the alternators a common issue on these cars? I drove the car but the battery voltage is dropping ever so slightly each time.

What is the correct alternator part number for a 2004? I think it is 99760301206

Quite often, the voltage regulator is the issue but fortunately can be changed out as a less than $50 DIY. Car should be showing around 14V at idle, much less than that is an indication that either the regulator or the alternator itself is on the way out. You can usually get the alternator tested for free at auto parts stores.

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.