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

Hi All,

 

I just bought a 2005 Cayenne S 4.5L V8 with 91k miles and I couldn't hear the engine well-enough when I bought it but now that I'm in a quieter area, it's much more evident that the engine has a knock and I wanted to ask for your help in identifying the problem and any possible solutions (hopefully affordable - although admittedly scared of the new engine stories I'm reading in these forums).

 

Here is an 0:08 video of the engine running which should give you an idea of the sound:

 

 

Any help would be MUCH APPRECIATED!

 

Thanks!

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

Dont want to scare you but this issue every Cayenne owner is worried about. If you search here for piston slap or scored cylinder you will find a lot of messages.

This noise i am very familar with. It happens with my first cayenne s. Solution is: you will have to rebuilt the engine. No need to say this is expensive. In which country you are located?

Link to post
Share on other sites

Yes I has the same sound. I was fearful it was piston slap from everything I read.  It was about 1100.00 to fix at and independent shop. The Pump, coolant and labor.  Take it to a Porsche specific shop and find out.

Link to post
Share on other sites

I still dont believe it the water pump. Sounds much more serious. Are you driving the car? Any sign of smoke when you starting? Did you check your oil level? Anything missing? How is the knocking when your engine is cold and how it sounds when its warm?

Link to post
Share on other sites

BAD NEWS guys... I drove the car for about 2hrs today going from one mechanic to the next for opinions and by the end of my trip, the check engine light came on and the engine started really struggling and shaking and I got P0300 and P0307 misfire codes!  :(

 

P0300: Random/Multiple Cylinder Misfire Detected

P0307: Cylinder 7 Misfire Detected

 

Is my engine hopeless?!

Link to post
Share on other sites

I still dont believe it the water pump. Sounds much more serious. Are you driving the car? Any sign of smoke when you starting? Did you check your oil level? Anything missing? How is the knocking when your engine is cold and how it sounds when its warm?

Link to post
Share on other sites

BAD NEWS guys... I drove the car for about 2hrs today going from one mechanic to the next for opinions and by the end of my trip, the check engine light came on and the engine started really struggling and shaking and I got P0300 and P0307 misfire codes!   :(

 

P0300: Random/Multiple Cylinder Misfire Detected

P0307: Cylinder 7 Misfire Detected

 

Is my engine hopeless?!

Ooouch!

Any recourse going back to the seller? I don't know Illinois law regarding used car sales. Is there an implied 30 day warranty? Was the seller a Porsche dealership, private party, random used car dealership.

 

As clean as the engine looks on a 91,000 mile car, I suspect it was dressed up just for the sale.

 

Link to post
Share on other sites
  • 2 weeks later...
  • 2 weeks later...

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.