Planet-9

Catalytic Converter Problem? Maybe?

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12 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

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YOUR RESEARCHCatalytic Converter Problem? Maybe?

Leading reported evidence

Replace per dealer

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Performed · outcome unconfirmed
They must be replaced per dealer!
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Catalytic Converter Problem? Maybe?

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Leading evidence: 'Replace per dealer' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace per dealer' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 12 captured posts examined · 1 partial discussions

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Replace under warranty

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed
I have had both stock cats replaced under warranty.
Original post Read captured discussion
Catalytic Converter Problem? Maybe?

Performed · outcome unconfirmed
Having mine replaced under warranty with 27K on the odo.
Original post Read captured discussion
Catalytic Converter Problem? Maybe?

Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace per dealer

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed
They must be replaced per dealer!
Original post Read captured discussion
Catalytic Converter Problem? Maybe?

Replace under warranty

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed
I have had both stock cats replaced under warranty.
Original post Read captured discussion
Catalytic Converter Problem? Maybe?

Performed · outcome unconfirmed
Having mine replaced under warranty with 27K on the odo.
Original post Read captured discussion
Catalytic Converter Problem? Maybe?

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Planet-9: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T150451Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I have almost 2000 miles on my car now and when i turn off the engine, there is quite a bit of snap, crackle, pop coming from the exhaust area along with a "smell". How do you know if you are having a problem with the catalytic converters? Seems like there are a few that have had them replaced. This of course, could just be the result of "suggestive" reading by browsing the forums too much and the car is just fine. Or maybe not. J

POST 2Original post

J - Your car is probably just fine - the exhaust systems on Porsches, along with all the metal air deflectors (more of those on earlier air-cooled cars) all get quite hot and all the noise is quite common. The smell is the cosmoline they put on the car to protect it from the salt air on the trip over from Finland burning off, which will take time. I still smell it some and have 18k miles on my car. If there's trouble with your cats, you'll get a computer error showing up on your dash a long time before your human nose will detect that there's anything amiss. brad

POST 3Original post

Brad is right on. That is a common noise to Porsches and the smell will go away after some miles (there have been several topics on this so a few others have had the same question). It isn't a complaint but one of the lovely Porsche noises.

POST 4Original post

Thanks for the headsup on this! I'll stop worrying about it since everything seems to be running great with no problems. J

POST 5Original post

My cats just went out after 3300 miles. They must be replaced per dealer!

POST 6Original post

That may be the case, but it has nothing to do with the smell of burning cosmoline. There's been quite a few documented cases of Cayman cats having to be replaced. brad

POST 7Original post

If you think your CS crackles and pops as the exhaust cools, you should listen to a Harley! All the heat shields are directly attached to the exhaust pipes, and it sounds like a percussion symphony as it cools.

POST 8Original post

Can you point me to the sources that refer to many cat replacements. Is this at the PCA site. I am not able to locate much on cats at this site.

POST 9Original post

2006 with 9900 miles, check engine light, service now message. Took it to dealer, says the catalytic converter has to be replaced. Any others had their cats go bad? Any ideas what could cause the cats to go bad?

POST 10Original post

I have had both stock cats replaced under warranty. The dealer told it is a very common problem with the 06's

POST 11Original post

Having mine replaced under warranty with 27K on the odo. It is an 06.

POST 12Original post

I had one catalytic converter fail at 5-6K miles. My car is also an '06

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