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)

Banging sound at low speed on '09 Cayenne GTS

GR997S
 Share

Recommended Posts

GR997S Member

GR997S

Posted
Posted

My new to me '09 GTS Cayenne with 15, 000 miles has a banging/knocking sound coming from the rear at speeds below 15 mph. It s very similar to the sound I had on my 997s when the welds on the sport exhaust broke. I almost sounds like a rock in a hub cap. Any ideas before I take it in? ...Thanks.

  • 2 months later...
mazhukas Member

mazhukas

Posted
Posted

hi, did you solve your knocking-ticking problem? the solution would be to change the engine.

its a problem on the earlier (2003-2004) Cayennes and looks like more and more cases are coming (rumors of class action law suits against Porsches)...

the problem is the "piston slap", where one of the cylinders (due to defective engineering) gets scorched

very surprising to see this problem on GTS '09...

PKN Member

PKN

Posted
Posted

Check out a couple of simple things first. I would make sure you dont have a stone caught between the disk and backplate. Also check the drive shaft to make sure something hasnt come loose. is the noise present when driving only, is it still there if you coast in neutral, d0es it get louder with revs and is it apparently in time with engine or wheel rotation. Doesnt sound like an engine problem to me

PKN

wvicary Member

wvicary

Posted
Posted

He states the noise is coming from the rear of the vehicle.... engine is stored up in the front bit.

hi, did you solve your knocking-ticking problem? the solution would be to change the engine.

its a problem on the earlier (2003-2004) Cayennes and looks like more and more cases are coming (rumors of class action law suits against Porsches)...

the problem is the "piston slap", where one of the cylinders (due to defective engineering) gets scorched

very surprising to see this problem on GTS '09...

geoff Member

geoff

Posted
Posted
... Any ideas before I take it in? ...Thanks.

I've been told the active sway bars can make a banging noise when they kick in. Does the sound occur when you're going around turns?

  • 2 weeks later...
GR997S Member

GR997S

Posted
  • Author
Posted

As it turned out, a part of the TPMS was loose inside the tire and was bagging around at low speeds against the rim.....GR

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing
×
×
  • 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.