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)

Vibration at 3000 RPM decelerating


Recommended Posts

Car s 2006 Boxster S with 10200 miles. US Spec, 6sp m, Black/Black, Borla exhaust. This is my 5th P car, but first Boxster, so some noises are new to me and may be nothing. But because of the mileage, and original IMS Bering, I am nervous about vibration. I put the Borla exhaust on shortly after I bought the car in December, but don't remember if I had the symptom before. Love the sound of the Borla, but if this vibration is from the exhaust, I'm OK. If it is engine, I am worried. It seems to happen in all of the lower 4 geers at 3000 RPM. Please tell me others have this and its not impending doom.

Link to comment
Share on other sites

  • 6 months later...

Engine vibration, off throttle especially, is a sign of the front motor mount failing, not a catastrophe impending. The front motor mount accommodates a lot of vibration in a vertical direction by large holes in the rubber above and below the central through bolt. When this space is taken up by the rubber losing its strength and the engine weight pushing the center bolt (and tube it goes through) against the thin rubber on the bottom of the motor mount (off throttle torque on the engine/transaxle adds to this force) you feel the characteristic vibration at 3100 rpm. Solid motor mounts do this and stuffing the holes in stock motor mounts with anything (in hopes of reducing movement of the engine and it's effect on shifting) may also lead to feeling this vibration.

Link to comment
Share on other sites

There are DIY tech articles on this motor mount change at Pelican Parts, and other places I’m sure.

Pelican’s conveniently fails to point out their simple procedure is done with coolant lines disconnected and out of the way. I’ve done this only once and can’t conceive of how it could be done with the lines in place, but have read other people’s account indicating it is possible. 

So, if you are ready to change your coolant and maybe water pump and thermostat at the same time this whole job will be longer but easier to complete from a difficulty standpoint.

( I welcome a video of how to remove the motor mount with coolant lines in place. A $10 donation to renntech.org will follow)

Edited by rwc94303
typo correction
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.

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.