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)

996 Tiptronic Transmission Noise

Recommended Posts

Hi All,

Just had a PPI done on a 2002 Porsche Carrera 4S with a Tiptronic transmission from a reputed tech. Vehicle has ~88k miles on the odometer. PPI noted that "During the test drive noticed a drive line noise that starts around 50 miles per hour that changes with throttle input. Something in the drive line is failing,"

Talking to the tech he said that while cruising around 50-60 mph, trying to feather the throttle results in a clanking noise similar to when a dual-weight flywheel is replaced with a single-weight flywheel in a stick-shift car. Discussed everything from transmission mounts to a remap of the TCU, but couldn't come up with a solid theory. Other thoughts are potentially a front "donut" on the transmission being cracked or loose.


CV boots were replaced in 2018, tires are 2017/2018 with sufficient tread.

Not looking to walk into a transmission grenade, so looking for some advice on what the issue might be.



Link to comment
Share on other sites

10 minutes ago, BigMike said:

Front differential? Mine went around 83k. Not sure there is a tell take sign, maybe leaking fluid or a worn flex disc?

Sent from my GM1917 using Tapatalk


Didn't see any leaking fluid, but tech didn't want to take the car apart to diagnose a worn flex disc as it is a PPI. Will still keep poking around and see what I can get.

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.