Jump to content

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)

Transmission problems

Recommended Posts

Gday .. I have a 2004 Porsche Boxster 986S and am having Transmission problems  ..  When im driving down the highway the transmission fluctuates between 4th and 5th gears  .. A mechanic

said that it is the Transmission Control Unit .. but another said that was unlikely  ..  anybody have any ideas  ???  Thanks Marcus

Link to comment
Share on other sites

I purchased the vehicle 2nd hand and do not know if the fluid has ever been changed  ..  I have not driven the vehicle yet ( Im in a wheelchair and as yet have not fitted a set of

hand controls ) ..  my mate drove it home and he said that it was  fluctuating between 4th and 5th  but other than that it drove very smoothly .. and he did not drive it manually

Link to comment
Share on other sites

The Tiptronic, while driving in 5th, can shift to 4th in an instant with a little bit of throttle. If there was no change in throttle and driving on level road then yes, there's a problem. At a low enough speed, but just enough to be in 5th, any tiny increase in throttle will result in a downshift.

Link to comment
Share on other sites

12 hours ago, Mark A Taylor said:

I have not driven the vehicle yet ( Im in a wheelchair and as yet have not fitted a set of

hand controls ) ..  

Off topic, and speaking of hand controls, it was very impressive to watch Alex Zanardi drive in the Rolex 24 last weekend. Amazing!

Link to comment
Share on other sites

Gday  ..  I have seen Alex Zanardi and think he is terrific but I saw a photo of him a while ago and he had a motorised wheel attached to the front of his wheelchair  ..  I dont know what to make of it so I dont judge  ..  that is to say its something I would never do as I have to good arms which allow me to push and control the chair any thing less is laziness  ...   Im thinking about what you said ..  maybe  ..  Lack of Fluid  ..  Kickdown adjustment or associated  ..  Or  TCU ?????? i shall continue to investigate  Thanks Marcus

Edited by Mark A Taylor
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.