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 login 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
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • 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)
PorschePower06

06 Cayenne S Misfire Question

6 posts in this topic

I have approx 35k on my 06 Cayenne S and yesterday and today it started very rough. Hooked up the Durametric tonight and confirmed 3 fault code misfires on cylinders 4, 6, 7. Drove it up the hill and it registered 3 mis-fires on cylinder 7. Did some searching and seems like a number of people have had misfires around 30 to 40k with different year Cayennes. So questions:

1) When do the 02 sensors typically go bad - could this be it?

2) Same for MAF sensor ?

3) I am not familar with the bank locations but I am guessing same bank?

4) Saw someone say to change the oil as it could be contaminated?

5) Is this an easy DIY or should I take it to the dealer?

6) Could it simply be the gas - too much ethanol?

Any assistance is greatly appreciated.

Share this post


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

I'd bet a big steak on bad ignition coils. Many, many people have had the same issue (me included). Your truck is under warrant so just take her in a should be back to normal after the coil change.

Share this post


Link to post
Share on other sites

I have the same problem, my Cayenne S lost power. I was told by the service agent that the coils went bad. after the coil change, it works fine now.

Share this post


Link to post
Share on other sites

As others have stated it's the ignition coils... the part has been updated and should be covered under the warranty period. Best to get them all replaced and not just the suspect one that's showing the misfire code.

Share this post


Link to post
Share on other sites

I can also add that this is not an expensive fix as I just did it on my 04 CTT. It runs about $120 for all 8 coils when ordering from our sponsors. The hardest part is just getting all the plastic covers off in the engine bay to remove the coils! I would also recommend if you are doing this yourself to change the plugs as well. Easy to do once the coils are out of the way. :)

David

Share this post


Link to post
Share on other sites

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