6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHintermittent misfire on `06 carrera base model
Leading reported evidence
Replace tires
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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 · Original poster
Tires were replaced every 4-5 years, and the battery was replaced twice.
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.
Suggestion · Original poster
Check performed using OBDII resulted in "No Codes." Review the history of maintenance, all with the dealer, history showed the vehicle was serviced at the required intervals, and the maintenance inspections performed at the time of each service were satisfactory.
Leading evidence: 'Replace tires' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check performed' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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 · Original poster
Tires were replaced every 4-5 years, and the battery was replaced twice.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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.
Suggestion · Original poster
Check performed using OBDII resulted in "No Codes." Review the history of maintenance, all with the dealer, history showed the vehicle was serviced at the required intervals, and the maintenance inspections performed at the time of each service were satisfactory.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check performed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.
Suggestion · Original poster
Check performed using OBDII resulted in "No Codes." Review the history of maintenance, all with the dealer, history showed the vehicle was serviced at the required intervals, and the maintenance inspections performed at the time of each service were satisfactory.
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.
6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Pelican Parts: 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: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Purchased this `06 Carrera (997) Cabriolet with manual trans, about a year and a half ago. Early on, I started to experience intermittent misfires independent of speed, gear, or on freeway or surface street. Took it in to the Porsche Dealer who sold it to me, and they determined faulty ignition coils and spark plugs to be the source of the misfires. They also performed a Porsche multi-point inspection with satisfactory results. A few weeks later, the misfires started up again, and again I took it back to the dealer. A week later, I was notified by the dealer that they could not duplicate the symptom and could not identify the fault code to home in on the problem. I've driving the car for the past several months tolerating the same intermittent misfires. I really can use some help/advice.
Thank you
If you have access to an ODBII Scanner, retrieve the code(s) and post them here. This will pinpoint what cylinder it is. It will also show if there are any O2 codes, injector codes, etc. Since the plugs/coils did not resolve the issue, it is possible a failing injector could be causing it, or something else. How many miles are on the car? Do you have any maintenance history on it?
Keith,
Thank you for such a detailed response. Yes, I do have a scanner purchased several years ago and still in the unopened package it came in. This will give a novice like me a chance to learn how to use it and investigate future problems. I will work on it today and let you know the results. My car has 45900 miles on it and I do have the carfax showing the maintenance history.
Ambro
If the air oil separator has not been replaced that could be an issue.
I have an 00 C2 with 57,000 miles. It would intermittently spit/sputter, like a misfire, but never trigger check engine light. It finally did about 1 month ago and it was an up stream O2 sensor. I bought 2 new O2 sensors but the error has not returned so I am just waiting.
My car had the plugs, coils, valve cover gaskets and AOS replaced at 51,000.
It is also possible you have a leaky valve cover gasket that is causing the coil to arc. You can check by removing each coil and see if there is oil on them. If there is, I would bet that is the issue.
Check performed using OBDII resulted in "No Codes." Review the history of maintenance, all with the dealer, history showed the vehicle was serviced at the required intervals, and the maintenance inspections performed at the time of each service were satisfactory. There were no significant mechanical repairs done throughout its lifetime other than front brake/brake light bulb replacement. Tires were replaced every 4-5 years, and the battery was replaced twice. Since I bought the car in May21, I replaced the battery, and all the spark plugs and ignition coils as a result of first reporting it to the dealer.
